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breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Eliseev%2C+S&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Eliseev%2C+S&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Eliseev%2C+S&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.10277">arXiv:2412.10277</a> <span> [<a href="https://arxiv.org/pdf/2412.10277">pdf</a>, <a href="https://arxiv.org/format/2412.10277">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Nonlinear calcium King plot constrains new bosons and nuclear properties </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Wilzewski%2C+A">A. Wilzewski</a>, <a href="/search/?searchtype=author&query=Huber%2C+L+I">L. I. Huber</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Richter%2C+J">J. Richter</a>, <a href="/search/?searchtype=author&query=Mariotti%2C+A">A. Mariotti</a>, <a href="/search/?searchtype=author&query=Spie%C3%9F%2C+L+J">L. J. Spie脽</a>, <a href="/search/?searchtype=author&query=Wehrheim%2C+M">M. Wehrheim</a>, <a href="/search/?searchtype=author&query=Chen%2C+S">S. Chen</a>, <a href="/search/?searchtype=author&query=King%2C+S+A">S. A. King</a>, <a href="/search/?searchtype=author&query=Micke%2C+P">P. Micke</a>, <a href="/search/?searchtype=author&query=Filzinger%2C+M">M. Filzinger</a>, <a href="/search/?searchtype=author&query=Steinel%2C+M+R">M. R. Steinel</a>, <a href="/search/?searchtype=author&query=Huntemann%2C+N">N. Huntemann</a>, <a href="/search/?searchtype=author&query=Benkler%2C+E">E. Benkler</a>, <a href="/search/?searchtype=author&query=Schmidt%2C+P+O">P. O. Schmidt</a>, <a href="/search/?searchtype=author&query=Flannery%2C+J">J. Flannery</a>, <a href="/search/?searchtype=author&query=Matt%2C+R">R. Matt</a>, <a href="/search/?searchtype=author&query=Stadler%2C+M">M. Stadler</a>, <a href="/search/?searchtype=author&query=Oswald%2C+R">R. Oswald</a>, <a href="/search/?searchtype=author&query=Schmid%2C+F">F. Schmid</a>, <a href="/search/?searchtype=author&query=Kienzler%2C+D">D. Kienzler</a>, <a href="/search/?searchtype=author&query=Home%2C+J">J. Home</a>, <a href="/search/?searchtype=author&query=Craik%2C+D+P+L+A">D. P. L. Aude Craik</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a> , et al. (17 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2412.10277v1-abstract-short" style="display: inline;"> Nonlinearities in King plots (KP) of isotope shifts (IS) can reveal the existence of beyond-Standard-Model (BSM) interactions that couple electrons and neutrons. However, it is crucial to distinguish higher-order Standard Model (SM) effects from BSM physics. We measure the IS of the transitions ${{}^{3}P_{0}~\rightarrow~{}^{3}P_{1}}$ in $\mathrm{Ca}^{14+}$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10277v1-abstract-full').style.display = 'inline'; document.getElementById('2412.10277v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.10277v1-abstract-full" style="display: none;"> Nonlinearities in King plots (KP) of isotope shifts (IS) can reveal the existence of beyond-Standard-Model (BSM) interactions that couple electrons and neutrons. However, it is crucial to distinguish higher-order Standard Model (SM) effects from BSM physics. We measure the IS of the transitions ${{}^{3}P_{0}~\rightarrow~{}^{3}P_{1}}$ in $\mathrm{Ca}^{14+}$ and ${{}^{2}S_{1/2} \rightarrow {}^{2}D_{5/2}}$ in $\mathrm{Ca}^{+}$ with sub-Hz precision as well as the nuclear mass ratios with relative uncertainties below $4\times10^{-11}$ for the five stable, even isotopes of calcium (${}^{40,42,44,46,48}\mathrm{Ca}$). Combined, these measurements yield a calcium KP nonlinearity with a significance of $\sim 900 蟽$. Precision calculations show that the nonlinearity cannot be fully accounted for by the expected largest higher-order SM effect, the second-order mass shift, and identify the little-studied nuclear polarization as the only remaining SM contribution that may be large enough to explain it. Despite the observed nonlinearity, we improve existing KP-based constraints on a hypothetical Yukawa interaction for most of the new boson masses between $10~\mathrm{eV/c^2}$ and $10^7~\mathrm{eV/c^2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10277v1-abstract-full').style.display = 'none'; document.getElementById('2412.10277v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.08118">arXiv:2407.08118</a> <span> [<a href="https://arxiv.org/pdf/2407.08118">pdf</a>, <a href="https://arxiv.org/format/2407.08118">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.110.L041301">10.1103/PhysRevB.110.L041301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Renormalization of the valley Hall conductivity due to interparticle interaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Eliseev%2C+D+S">D. S. Eliseev</a>, <a href="/search/?searchtype=author&query=Parafilo%2C+A+V">A. V. Parafilo</a>, <a href="/search/?searchtype=author&query=Kovalev%2C+V+M">V. M. Kovalev</a>, <a href="/search/?searchtype=author&query=Kibis%2C+O+V">O. V. Kibis</a>, <a href="/search/?searchtype=author&query=Savenko%2C+I+G">I. G. Savenko</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.08118v1-abstract-short" style="display: inline;"> We develop a theory of Coulomb interaction-mediated contribution to valley Hall effect (VHE) in two-dimensional non-centrosymmetric gapped Dirac materials. We assume that the bare valley Hall current occurs in the system due to the presence of disorder caused by impurities and is determined by the valley-selective anisotropic skew scattering. Applying the Boltzmann transport equation to describe t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08118v1-abstract-full').style.display = 'inline'; document.getElementById('2407.08118v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.08118v1-abstract-full" style="display: none;"> We develop a theory of Coulomb interaction-mediated contribution to valley Hall effect (VHE) in two-dimensional non-centrosymmetric gapped Dirac materials. We assume that the bare valley Hall current occurs in the system due to the presence of disorder caused by impurities and is determined by the valley-selective anisotropic skew scattering. Applying the Boltzmann transport equation to describe the electron and hole transport in the material, we calculate the renormalized VHE conductivity due to electron-electron and electron-hole scattering processes, considering two regimes: (i) an $n$-doped monolayer hosting a degenerate electron gas, and (ii) an intrinsic semiconductor with the Boltzmann statistics of electron and hole gases. In both regimes, the dominant mechanism of interparticle scattering is due to particles residing in different valleys. Moreover, in case (ii), in addition to direct scattering, electron-hole annihilation starts to play a role with the increase in temperature. It might even become the dominant mechanism of the Coulomb interaction-mediated VHE. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08118v1-abstract-full').style.display = 'none'; document.getElementById('2407.08118v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 110, L041301 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.07792">arXiv:2403.07792</a> <span> [<a href="https://arxiv.org/pdf/2403.07792">pdf</a>, <a href="https://arxiv.org/format/2403.07792">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.134.063002">10.1103/PhysRevLett.134.063002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing new bosons and nuclear structure with ytterbium isotope shifts </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Yeh%2C+C">Chih-Han Yeh</a>, <a href="/search/?searchtype=author&query=Heinz%2C+M">Matthias Heinz</a>, <a href="/search/?searchtype=author&query=Kirk%2C+F">Fiona Kirk</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Miyagi%2C+T">Takayuki Miyagi</a>, <a href="/search/?searchtype=author&query=Berengut%2C+J+C">Julian C. Berengut</a>, <a href="/search/?searchtype=author&query=Biero%C5%84%2C+J">Jacek Biero艅</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a>, <a href="/search/?searchtype=author&query=Dreissen%2C+L+S">Laura S. Dreissen</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Filzinger%2C+M">Melina Filzinger</a>, <a href="/search/?searchtype=author&query=Fuchs%2C+E">Elina Fuchs</a>, <a href="/search/?searchtype=author&query=F%C3%BCrst%2C+H+A">Henning A. F眉rst</a>, <a href="/search/?searchtype=author&query=Gaigalas%2C+G">Gediminas Gaigalas</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Huntemann%2C+N">Nils Huntemann</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Schwenk%2C+A">Achim Schwenk</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.07792v2-abstract-short" style="display: inline;"> In this Letter, we present mass-ratio measurements on highly charged Yb$^{42+}$ ions with a precision of $4\times 10^{-12}$ and isotope-shift measurements on Yb$^{+}$ on the $^{2}$S$_{1/2}$ $\to$ $^{2}$D$_{5/2}$ and $^{2}$S$_{1/2}$ $\to$ $^{2}$F$_{7/2}$ transitions with a precision of $4\times 10^{-9}$ for the isotopes $^{168,170,172,174,176}$Yb. We present a new method that allows us to extract h… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07792v2-abstract-full').style.display = 'inline'; document.getElementById('2403.07792v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.07792v2-abstract-full" style="display: none;"> In this Letter, we present mass-ratio measurements on highly charged Yb$^{42+}$ ions with a precision of $4\times 10^{-12}$ and isotope-shift measurements on Yb$^{+}$ on the $^{2}$S$_{1/2}$ $\to$ $^{2}$D$_{5/2}$ and $^{2}$S$_{1/2}$ $\to$ $^{2}$F$_{7/2}$ transitions with a precision of $4\times 10^{-9}$ for the isotopes $^{168,170,172,174,176}$Yb. We present a new method that allows us to extract higher-order changes in the nuclear charge distribution along the Yb isotope chain, benchmarking ab-initio nuclear structure calculations. Additionally, we perform a King plot analysis to set bounds on a fifth force in the keV$/c^2$ to MeV$/c^2$ range coupling to electrons and neutrons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07792v2-abstract-full').style.display = 'none'; document.getElementById('2403.07792v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 134 (2025) 063002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.06464">arXiv:2402.06464</a> <span> [<a href="https://arxiv.org/pdf/2402.06464">pdf</a>, <a href="https://arxiv.org/ps/2402.06464">ps</a>, <a href="https://arxiv.org/format/2402.06464">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Penning-trap measurement of the $Q$-value of the electron capture in $^{163}\mathrm{Ho}$ for the determination of the electron neutrino mass </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Bra%C3%9F%2C+M">Martin Bra脽</a>, <a href="/search/?searchtype=author&query=Debierre%2C+V">Vincent Debierre</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Dorrer%2C+H">Holger Dorrer</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Christoph E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Enss%2C+C">Christian Enss</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Gastaldo%2C+L">Loredana Gastaldo</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Haverkort%2C+M+W">Maurits W. Haverkort</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Renisch%2C+D">Dennis Renisch</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.06464v1-abstract-short" style="display: inline;"> The investigation of the absolute scale of the effective neutrino mass remains challenging due to the exclusively weak interaction of neutrinos with all known particles in the standard model of particle physics. Currently, the most precise and least model-dependent upper limit on the electron antineutrino mass is set by the KATRIN experiment from the analysis of the tritium \b{eta}-decay. Another… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.06464v1-abstract-full').style.display = 'inline'; document.getElementById('2402.06464v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.06464v1-abstract-full" style="display: none;"> The investigation of the absolute scale of the effective neutrino mass remains challenging due to the exclusively weak interaction of neutrinos with all known particles in the standard model of particle physics. Currently, the most precise and least model-dependent upper limit on the electron antineutrino mass is set by the KATRIN experiment from the analysis of the tritium \b{eta}-decay. Another promising approach is the electron capture in $^{163}\mathrm{Ho}$, which is under investigation using microcalorimetry within the ECHo and HOLMES collab orations. An independently measured Q-value of this process is vital for the assessment of systematic uncertainties in the neutrino mass determination. Here, we report a direct, independent determination of this $Q$-value by measuring the free-space cyclotron frequency ratio of highly charged ions of $^{163}\mathrm{Ho}$ and $^{163}\mathrm{Dy}$ in the Penning trap experiment \textsc{Pentatrap}. Combining this ratio with atomic physics calculations of the electronic binding energies yields a $Q$-value of $2863.2(0.6)\,\mathrm{eV}/c^{2}$ - a more than 50-fold improvement over the state-of-the-art. This will enable the determination of the electron neutrino mass on a sub-eV level from the analysis of the electron capture in $^{163}\mathrm{Ho}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.06464v1-abstract-full').style.display = 'none'; document.getElementById('2402.06464v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.17041">arXiv:2312.17041</a> <span> [<a href="https://arxiv.org/pdf/2312.17041">pdf</a>, <a href="https://arxiv.org/format/2312.17041">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Atomic mass determination of uranium-238 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Biero%C5%84%2C+J">Jacek Biero艅</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Enzmann%2C+L">Lucia Enzmann</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Gaigalas%2C+G">Gediminas Gaigalas</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.17041v1-abstract-short" style="display: inline;"> The atomic mass of uranium-238 has been determined to be $238.050\,787\,618(15)\,\text{u}$, improving the literature uncertainty by two orders of magnitude. It is obtained from a measurement of the mass ratio of $^{238}$U$^{47+}$ and $^{132}$Xe$^{26+}$ ions with an uncertainty of $3.5\times 10^{-12}$. The measurement was carried out with the Penning-trap mass spectrometer \textsc{Pentatrap} and wa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.17041v1-abstract-full').style.display = 'inline'; document.getElementById('2312.17041v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.17041v1-abstract-full" style="display: none;"> The atomic mass of uranium-238 has been determined to be $238.050\,787\,618(15)\,\text{u}$, improving the literature uncertainty by two orders of magnitude. It is obtained from a measurement of the mass ratio of $^{238}$U$^{47+}$ and $^{132}$Xe$^{26+}$ ions with an uncertainty of $3.5\times 10^{-12}$. The measurement was carried out with the Penning-trap mass spectrometer \textsc{Pentatrap} and was accompanied by a calculation of the binding energies $E_{\text{U}}$ and $E_{\text{Xe}}$ of the 47 and 26 missing electrons of the two highly charged ions, respectively. These binding energies were determined using an \textit{ab initio} multiconfiguration Dirac-Hartree-Fock (MCDHF) method to be $E_{\text{U}} = 39\,927(10)\,\text{eV}$ and $E_{\text{Xe}} = 8\,971.2(21)\,\text{eV}$. The new mass value will serve as a reference for high-precision mass measurements in the heavy mass region of the nuclear chart up to transuranium nuclides. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.17041v1-abstract-full').style.display = 'none'; document.getElementById('2312.17041v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Includes a Supplemental Material</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.03156">arXiv:2312.03156</a> <span> [<a href="https://arxiv.org/pdf/2312.03156">pdf</a>, <a href="https://arxiv.org/format/2312.03156">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> </div> <p class="title is-5 mathjax"> Optical coherence storage in dark exciton states using spin-dependent three-pulse photon echo </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Solovev%2C+I+A">I. A. Solovev</a>, <a href="/search/?searchtype=author&query=Nazarov%2C+R+S">R. S. Nazarov</a>, <a href="/search/?searchtype=author&query=Butiugina%2C+A+A">A. A. Butiugina</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovcjus%2C+V+A">V. A. Lovcjus</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Kapitonov%2C+Y+V">Yu. V. Kapitonov</a>, <a href="/search/?searchtype=author&query=Yugova%2C+I+A">I. A. Yugova</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.03156v1-abstract-short" style="display: inline;"> Extension of coherent response time is a desired goal in the field of all-optical information processing implemented in classical and quantum ways. Here we demonstrate how spin-dependent stimulated photon echo can be used to extend decay time of coherent signal from exciton ensemble. We experimentally studied photon echoes from excitons in a model single InGaAs/GaAs quantum well subject to transve… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.03156v1-abstract-full').style.display = 'inline'; document.getElementById('2312.03156v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.03156v1-abstract-full" style="display: none;"> Extension of coherent response time is a desired goal in the field of all-optical information processing implemented in classical and quantum ways. Here we demonstrate how spin-dependent stimulated photon echo can be used to extend decay time of coherent signal from exciton ensemble. We experimentally studied photon echoes from excitons in a model single InGaAs/GaAs quantum well subject to transverse magnetic field. Field-induced quantum beats lead to oscillation of exciton population between bright and long-lived dark excitons. As a result, photon echo decays much longer with decay time attaining dark exciton lifetime in case of non-oscillatory regime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.03156v1-abstract-full').style.display = 'none'; document.getElementById('2312.03156v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.08068">arXiv:2311.08068</a> <span> [<a href="https://arxiv.org/pdf/2311.08068">pdf</a>, <a href="https://arxiv.org/format/2311.08068">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/5.0083515">10.1063/5.0083515 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Fast Silicon Carbide MOSFET based high-voltage push-pull switch for charge state separation of highly charged ions with a Bradbury-Nielsen Gate </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Marschall%2C+D">Domenik Marschall</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Wagner%2C+T">Thomas Wagner</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.08068v1-abstract-short" style="display: inline;"> In this paper we report on the development of a fast high-voltage switch, which is based on two enhancement mode N-channel Silicon Carbide Metal Oxide Semiconductor Field-Effect Transistors in push-pull configuration. The switch is capable of switching high voltages up to 600 V on capacitive loads with rise and fall times on the order of 10 ns and pulse widths $\leq$ 20 ns. Using this switch it wa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08068v1-abstract-full').style.display = 'inline'; document.getElementById('2311.08068v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.08068v1-abstract-full" style="display: none;"> In this paper we report on the development of a fast high-voltage switch, which is based on two enhancement mode N-channel Silicon Carbide Metal Oxide Semiconductor Field-Effect Transistors in push-pull configuration. The switch is capable of switching high voltages up to 600 V on capacitive loads with rise and fall times on the order of 10 ns and pulse widths $\leq$ 20 ns. Using this switch it was demonstrated that from the charge state distribution of bunches of highly charged ions ejected from an electron beam ion trap with a specific kinetic energy, single charge states can be separated by fast switching of the high voltage applied to a Bradbury-Nielsen Gate with a resolving power of about 100. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08068v1-abstract-full').style.display = 'none'; document.getElementById('2311.08068v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Rev. Sci. Instrum. 93, 094702 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.19365">arXiv:2310.19365</a> <span> [<a href="https://arxiv.org/pdf/2310.19365">pdf</a>, <a href="https://arxiv.org/format/2310.19365">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Observation of a low-lying metastable electronic state in highly charged lead by Penning-trap mass spectrometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.19365v1-abstract-short" style="display: inline;"> Highly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The development of XUV frequency combs has enabled the search for clock transitions based on shorter wavelengths in HCIs. However, without initial knowledge of the energy of the clock states, these narrow transitions are di… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.19365v1-abstract-full').style.display = 'inline'; document.getElementById('2310.19365v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.19365v1-abstract-full" style="display: none;"> Highly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The development of XUV frequency combs has enabled the search for clock transitions based on shorter wavelengths in HCIs. However, without initial knowledge of the energy of the clock states, these narrow transitions are difficult to be probed by lasers. In this Letter, we provide experimental observation and theoretical calculation of a long-lived electronic state in Nb-like Pb$^{41+}$ which could be used as a clock state. With the mass spectrometer Pentatrap, the excitation energy of this metastable state is directly determined as a mass difference at an energy of 31.2(8) eV, corresponding to one of the most precise relative mass determinations to date with a fractional uncertainty of $4\times10^{-12}$. This experimental result agrees within 1 $蟽$ with two partially different \textit{ab initio} multi-configuration Dirac-Hartree-Fock calculations of 31.68(13) eV and 31.76(35) eV, respectively. With a calculated lifetime of 26.5(5.3) days, the transition from this metastable state to the ground state bears a quality factor of $1.1\times10^{23}$ and allows for the construction of a HCI clock with a fractional frequency instability of $<10^{-19}/\sqrt蟿$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.19365v1-abstract-full').style.display = 'none'; document.getElementById('2310.19365v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.11119">arXiv:2310.11119</a> <span> [<a href="https://arxiv.org/pdf/2310.11119">pdf</a>, <a href="https://arxiv.org/format/2310.11119">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> High-precision determination of $g$ factors and masses of $^{20}\text{Ne}^{9+}$ and $^{22}\text{Ne}^{9+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Hei%C3%9Fe%2C+F">F. Hei脽e</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Sailer%2C+T">T. Sailer</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">J. Herkenhoff</a>, <a href="/search/?searchtype=author&query=K%C3%B6nig%2C+C+M">C. M. K枚nig</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">K. Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">D. Lange</a>, <a href="/search/?searchtype=author&query=Morgner%2C+J">J. Morgner</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Ch. Schweiger</a>, <a href="/search/?searchtype=author&query=Tu.%2C+B">B. Tu.</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Y. N. Novikov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">S. Sturm</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.11119v1-abstract-short" style="display: inline;"> We present the measurements of individual bound electron $g$ factors of $^{20}\text{Ne}^{9+}$ and $^{22}\text{Ne}^{9+}$ on the relative level of $0.1\,\text{parts}$ per billion. The comparison with theory represents the most stringent test of bound-state QED in strong electric fields. A dedicated mass measurement results in $m\left(^{20}\text{Ne}\right)=19.992\,440\,168\,77\,(9)\,\text{u}$, which… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11119v1-abstract-full').style.display = 'inline'; document.getElementById('2310.11119v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.11119v1-abstract-full" style="display: none;"> We present the measurements of individual bound electron $g$ factors of $^{20}\text{Ne}^{9+}$ and $^{22}\text{Ne}^{9+}$ on the relative level of $0.1\,\text{parts}$ per billion. The comparison with theory represents the most stringent test of bound-state QED in strong electric fields. A dedicated mass measurement results in $m\left(^{20}\text{Ne}\right)=19.992\,440\,168\,77\,(9)\,\text{u}$, which improves the current literature value by a factor of nineteen, disagrees by $4$ standard deviations and represents the most precisely measured mass value in atomic mass units. Together, these measurements yield an electron mass on the relative level of $0.1\,\text{ppb}$ with $m_{\text{e}}=5.485\,799\,090\,99\,(59) \times 10^{-4}\,\text{u}$ as well as a factor of eight improved $m\left(^{22}\text{Ne}\right)=21.991\,385\,098\,2\,(26)\,\text{u}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11119v1-abstract-full').style.display = 'none'; document.getElementById('2310.11119v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.07191">arXiv:2308.07191</a> <span> [<a href="https://arxiv.org/pdf/2308.07191">pdf</a>, <a href="https://arxiv.org/ps/2308.07191">ps</a>, <a href="https://arxiv.org/format/2308.07191">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.108.L081107">10.1103/PhysRevB.108.L081107 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Optically induced delocalization of electrons bound by attractive potentials </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kibis%2C+O+V">O. V. Kibis</a>, <a href="/search/?searchtype=author&query=Boev%2C+M+V">M. V. Boev</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+D+S">D. S. Eliseev</a>, <a href="/search/?searchtype=author&query=Kovalev%2C+V+M">V. M. Kovalev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.07191v1-abstract-short" style="display: inline;"> Within the Floquet theory of periodically driven quantum systems, we demonstrate that a circularly polarized off-resonant electromagnetic field can destroy the electron states bound by three-dimensional attractive potentials. As a consequence, the optically induced delocalization of bound electrons appears. The effect arises from the changing of topological structure of a potential landscape under… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.07191v1-abstract-full').style.display = 'inline'; document.getElementById('2308.07191v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.07191v1-abstract-full" style="display: none;"> Within the Floquet theory of periodically driven quantum systems, we demonstrate that a circularly polarized off-resonant electromagnetic field can destroy the electron states bound by three-dimensional attractive potentials. As a consequence, the optically induced delocalization of bound electrons appears. The effect arises from the changing of topological structure of a potential landscape under a circularly polarized off-resonant electromagnetic field which turns simply connected potentials into doubly connected ones. Possible manifestations of the effect are discussed for conduction electrons in condensed-matter structures. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.07191v1-abstract-full').style.display = 'none'; document.getElementById('2308.07191v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 108, L081107 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.04988">arXiv:2304.04988</a> <span> [<a href="https://arxiv.org/pdf/2304.04988">pdf</a>, <a href="https://arxiv.org/format/2304.04988">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> </div> <p class="title is-5 mathjax"> Magnetic field study of exciton nonradiative broadening excitation spectra in GaAs/AlGaAs quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Chukeev%2C+M+A">M. A. Chukeev</a>, <a href="/search/?searchtype=author&query=Kurdyubov%2C+A+S">A. S. Kurdyubov</a>, <a href="/search/?searchtype=author&query=Ryzhov%2C+I+I">I. I. Ryzhov</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Grigoryev%2C+P+S">P. S. Grigoryev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2304.04988v1-abstract-short" style="display: inline;"> Exciton excited states in the quantum well are studied via their effect on the nonradiative broadening of the ground exciton resonance. Dependence of the nonradiative broadening of the ground exciton state on the photon energy of additional laser excitation was measured. Applying magnetic field up to 6 T, we could trace the formation of Landau levels and evolution of the exciton states of size qua… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.04988v1-abstract-full').style.display = 'inline'; document.getElementById('2304.04988v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.04988v1-abstract-full" style="display: none;"> Exciton excited states in the quantum well are studied via their effect on the nonradiative broadening of the ground exciton resonance. Dependence of the nonradiative broadening of the ground exciton state on the photon energy of additional laser excitation was measured. Applying magnetic field up to 6 T, we could trace the formation of Landau levels and evolution of the exciton states of size quantization in a 14-nm GaAs/AlGaAs quantum well. Sensitivity of the technique allowed for observation of the second exciton state of size quantization, unavailable for conventional reflectance and photoluminescence spectroscopy. Our interpretation is supported by the numerical calculation of the exciton energies of the heavy-hole and light-hole subsystems. The numerical problems were solved using the finite-difference method on the nonuniform grid. The ground Landau level of the free electron-hole pair was observed and numerically analysed. In addition to energies of the excited states, electron hole distances and exciton-light interaction constant was investigated using the obtained in the numerical procedure exciton wave functions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.04988v1-abstract-full').style.display = 'none'; document.getElementById('2304.04988v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 April, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.01107">arXiv:2212.01107</a> <span> [<a href="https://arxiv.org/pdf/2212.01107">pdf</a>, <a href="https://arxiv.org/format/2212.01107">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.107.075302">10.1103/PhysRevB.107.075302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nonlinear behaviour of the nonradiative exciton reservoir in quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kurdyubov%2C+A+S">A. S. Kurdyubov</a>, <a href="/search/?searchtype=author&query=Trifonov%2C+A+V">A. V. Trifonov</a>, <a href="/search/?searchtype=author&query=Mikhailov%2C+A+V">A. V. Mikhailov</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.01107v1-abstract-short" style="display: inline;"> Excitons and free charge carriers with large wave vectors form a nonradiative reservoir, which can strongly affect properties of bright excitons due to the exciton-exciton and exciton-carrier interactions. In the present work, the dynamics of quasiparticles in the reservoir at different areal densities is experimentally studied in a GaAs/AlGaAs quantum well using a time-resolved reflectance spectr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.01107v1-abstract-full').style.display = 'inline'; document.getElementById('2212.01107v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.01107v1-abstract-full" style="display: none;"> Excitons and free charge carriers with large wave vectors form a nonradiative reservoir, which can strongly affect properties of bright excitons due to the exciton-exciton and exciton-carrier interactions. In the present work, the dynamics of quasiparticles in the reservoir at different areal densities is experimentally studied in a GaAs/AlGaAs quantum well using a time-resolved reflectance spectroscopy of nonradiative broadening of exciton resonances. The population of the reservoir is controlled either by the excitation power or by the temperature of the structure under study. The dynamics is quantitatively analyzed in the framework of the model developed earlier [Kurdyubov et al., Phys. Rev. B {\bf 104}, 035414 (2021)]. The model considers several dynamic processes, such as scattering of photoexcited excitons into the reservoir, dissociation of excitons into free charge carriers and the reverse process, carrier-induced exciton scattering into the light cone depleting the reservoir, thermally activated nonradiative losses of charge carriers. We have found that competition of these processes leads to highly nonlinear dynamics of reservoir excitons, although their density is far below the exciton Mott transition densities. Characteristic rates of the processes and their dependencies on the excitation power and the temperature are determined. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.01107v1-abstract-full').style.display = 'none'; document.getElementById('2212.01107v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to PRB</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.11602">arXiv:2210.11602</a> <span> [<a href="https://arxiv.org/pdf/2210.11602">pdf</a>, <a href="https://arxiv.org/format/2210.11602">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epja/s10050-022-00860-1">10.1140/epja/s10050-022-00860-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High-precision mass measurement of doubly magic $^{208}$Pb </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">Chunhai Lyu</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zolt谩n Harman</a>, <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph H. Keitel</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.11602v1-abstract-short" style="display: inline;"> The absolute atomic mass of $^{208}$Pb has been determined with a fractional uncertainty of $7\times 10^{-11}$ by measuring the cyclotron-frequency ratio $R$ of $^{208}$Pb$^{41+}$ to $^{132}$Xe$^{26+}$ with the high-precision Penning-trap mass spectrometer Pentatrap and computing the binding energies $E_{\text{Pb}}$ and $E_{\text{Xe}}$ of the missing 41 and 26 atomic electrons, respectively, with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11602v1-abstract-full').style.display = 'inline'; document.getElementById('2210.11602v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.11602v1-abstract-full" style="display: none;"> The absolute atomic mass of $^{208}$Pb has been determined with a fractional uncertainty of $7\times 10^{-11}$ by measuring the cyclotron-frequency ratio $R$ of $^{208}$Pb$^{41+}$ to $^{132}$Xe$^{26+}$ with the high-precision Penning-trap mass spectrometer Pentatrap and computing the binding energies $E_{\text{Pb}}$ and $E_{\text{Xe}}$ of the missing 41 and 26 atomic electrons, respectively, with the ab initio fully relativistic multi-configuration Dirac-Hartree-Fock (MCDHF) method. $R$ has been measured with a relative precision of $9\times 10^{-12}$. $E_{\text{Pb}}$ and $E_{\text{Xe}}$ have been computed with an uncertainty of 9.1 eV and 2.1 eV, respectively, yielding $207.976\,650\,571(14)$ u (u$=9.314\,941\,024\,2(28)\times 10^{8}$ eV/c$^2$) for the $^{208}$Pb neutral atomic mass. This result agrees within $1.2蟽$ with that from the Atomic-Mass Evaluation (AME) 2020, while improving the precision by almost two orders of magnitude. The new mass value directly improves the mass precision of 14 nuclides in the region of Z=81-84 and is the most precise mass value with A>200. Thus, the measurement establishes a new region of reference mass values which can be used e.g. for precision mass determination of transuranium nuclides, including the superheavies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11602v1-abstract-full').style.display = 'none'; document.getElementById('2210.11602v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures, to be published in EPJA</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. A 58, 202 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.13177">arXiv:2206.13177</a> <span> [<a href="https://arxiv.org/pdf/2206.13177">pdf</a>, <a href="https://arxiv.org/format/2206.13177">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.106.035202">10.1103/PhysRevB.106.035202 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Unveiling the electron-nuclear spin dynamics in an n-doped InGaAs epilayer by spin noise spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Rittmann%2C+C">C. Rittmann</a>, <a href="/search/?searchtype=author&query=Petrov%2C+M+Y">M. Yu. Petrov</a>, <a href="/search/?searchtype=author&query=Kamenskii%2C+A+N">A. N. Kamenskii</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+K+V">K. V. Kavokin</a>, <a href="/search/?searchtype=author&query=Kuntsevich%2C+A+Y">A. Yu. Kuntsevich</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Bayer%2C+M">M. Bayer</a>, <a href="/search/?searchtype=author&query=Greilich%2C+A">A. Greilich</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.13177v1-abstract-short" style="display: inline;"> We discuss the implications of a small indium content (3%) in a GaAs epilayer on the electron- and nuclear-spin relaxation due to enhanced quadrupolar effects induced by the strain. Using the weakly perturbative spin-noise spectroscopy, we study the electron-spin relaxation dynamics without explicit excitation. The observed temperature dependence indicates the presence of localized states, which h… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.13177v1-abstract-full').style.display = 'inline'; document.getElementById('2206.13177v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.13177v1-abstract-full" style="display: none;"> We discuss the implications of a small indium content (3%) in a GaAs epilayer on the electron- and nuclear-spin relaxation due to enhanced quadrupolar effects induced by the strain. Using the weakly perturbative spin-noise spectroscopy, we study the electron-spin relaxation dynamics without explicit excitation. The observed temperature dependence indicates the presence of localized states, which have an increased interaction with the surrounding nuclear spins. Time-resolved spin-noise spectroscopy is then applied to study the relaxation dynamics of the optically pumped nuclear-spin system. It shows a multi-exponential decay with time components, ranging from several seconds to hundreds of seconds. Further, we provide a measurement of the local magnetic field acting between the nuclear spins and discover a strong contribution of quadrupole effects. Finally, we apply the nuclear spin diffusion model, that allows us to estimate the concentration of the localized carrier states and to determine the nuclear spin diffusion constant characteristic for this system. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.13177v1-abstract-full').style.display = 'none'; document.getElementById('2206.13177v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 9 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.10534">arXiv:2205.10534</a> <span> [<a href="https://arxiv.org/pdf/2205.10534">pdf</a>, <a href="https://arxiv.org/format/2205.10534">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.106.024310">10.1103/PhysRevC.106.024310 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct determination of the excitation energy of quasi-stable isomer $^{180m}$Ta </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Nesterenko%2C+D+A">D. A. Nesterenko</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Delahaye%2C+P">P. Delahaye</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Eronen%2C+T">T. Eronen</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Ge%2C+Z">Z. Ge</a>, <a href="/search/?searchtype=author&query=Hukkanen%2C+M">M. Hukkanen</a>, <a href="/search/?searchtype=author&query=Kankainen%2C+A">A. Kankainen</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Popov%2C+A+V">A. V. Popov</a>, <a href="/search/?searchtype=author&query=Raggio%2C+A">A. Raggio</a>, <a href="/search/?searchtype=author&query=Stryjczyk%2C+M">M. Stryjczyk</a>, <a href="/search/?searchtype=author&query=Virtanen%2C+V">V. Virtanen</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2205.10534v1-abstract-short" style="display: inline;"> $^{180m}… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.10534v1-abstract-full').style.display = 'inline'; document.getElementById('2205.10534v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.10534v1-abstract-full" style="display: none;"> $^{180m}$Ta is a naturally abundant quasi-stable nuclide and the longest-lived nuclear isomer known to date. It is of interest for, among others, the search for dark matter, for the development of a gamma laser and for astrophysics. So far, its excitation energy has not been measured directly but has been based on an evaluation of available nuclear reaction data. We have determined the excitation energy of this isomer with high accuracy using the Penning-trap mass spectrometer JYFLTRAP. The determined mass difference between the ground and isomeric states of $^{180}$Ta yields an excitation energy of 76.79(55) keV for $^{180m}$Ta. This is the first direct measurement of the excitation energy and provides a better accuracy than the previous evaluation value, 75.3(14) keV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.10534v1-abstract-full').style.display = 'none'; document.getElementById('2205.10534v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.09184">arXiv:2203.09184</a> <span> [<a href="https://arxiv.org/pdf/2203.09184">pdf</a>, <a href="https://arxiv.org/format/2203.09184">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.113001">10.1103/PhysRevLett.124.113001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Mass-difference measurements on heavy nuclides with at an eV/c2 accuracy level with PENTATRAP </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Cakir%2C+H">H. Cakir</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Z. Harman</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">W. J. Huang</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">P. Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">C. H. Keitel</a>, <a href="/search/?searchtype=author&query=Koenig%2C+C+M">C. M. Koenig</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">K. Kromer</a>, <a href="/search/?searchtype=author&query=Mueller%2C+M">M. Mueller</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Y. N. Novikov</a>, <a href="/search/?searchtype=author&query=Schuessler%2C+R+X">R. X. Schuessler</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Ch. Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.09184v1-abstract-short" style="display: inline;"> First ever measurements of the ratios of free cyclotron frequencies of heavy highly charged ions with Z>50 with relative uncertainties close to 1e-11 are presented. Such accurate measurements have become realistic due to the construction of the novel cryogenic multi-Penning-trap mass spectrometer PENTATRAP. Based on the measured frequency ratios, the mass differences of five pairs of stable xenon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.09184v1-abstract-full').style.display = 'inline'; document.getElementById('2203.09184v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.09184v1-abstract-full" style="display: none;"> First ever measurements of the ratios of free cyclotron frequencies of heavy highly charged ions with Z>50 with relative uncertainties close to 1e-11 are presented. Such accurate measurements have become realistic due to the construction of the novel cryogenic multi-Penning-trap mass spectrometer PENTATRAP. Based on the measured frequency ratios, the mass differences of five pairs of stable xenon isotopes, ranging from 126Xe to 134Xe, have been determined. Moreover, the first direct measurement of an electron binding energy in a heavy highly charged ion, namely of the 37th atomic electron in xenon, with an uncertainty of a few eV is demonstrated. The obtained value agrees with the calculated one using two independent different implementations of the multiconfiguration Dirac-Hartree-Fock method. PENTATRAP opens the door to future measurements of electron binding energies in highly charged heavy ions for more stringent tests of bound-state quantum electrodynamics in strong electromagnetic fields and for an investigation of the manifestation of Light Dark Matter in isotopic chains of certain chemical elements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.09184v1-abstract-full').style.display = 'none'; document.getElementById('2203.09184v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">2 figures, 1 table, 28 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124 (2020) 113001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.07848">arXiv:2203.07848</a> <span> [<a href="https://arxiv.org/pdf/2203.07848">pdf</a>, <a href="https://arxiv.org/format/2203.07848">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/2058-9565/abbc75">10.1088/2058-9565/abbc75 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Perspectives on testing fundamental physics with highly charged ions in Penning traps </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">Sven Sturm</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.07848v1-abstract-short" style="display: inline;"> In Penning traps electromagnetic forces are used to confine charged particles under well-controlled conditions for virtually unlimited time. Sensitive detection methods have been developed to allow observation of single stored ions. Various cooling methods can be employed to reduce the energy of the trapped particle to nearly at rest. In this review we summarize how highly charged ions offer uniqu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.07848v1-abstract-full').style.display = 'inline'; document.getElementById('2203.07848v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.07848v1-abstract-full" style="display: none;"> In Penning traps electromagnetic forces are used to confine charged particles under well-controlled conditions for virtually unlimited time. Sensitive detection methods have been developed to allow observation of single stored ions. Various cooling methods can be employed to reduce the energy of the trapped particle to nearly at rest. In this review we summarize how highly charged ions offer unique possibilities for precision measurements in Penning traps. Precision atomic and nuclear masses as well as magnetic moments of bound electrons allow among others to determine fundamental constants like the mass of the electron or to perform stringent tests of fundamental interactions like bound-state quantum electrodynamics. Recent results and future perspectives in high-precision Penning-trap spectroscopy with highly charged ions will be discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.07848v1-abstract-full').style.display = 'none'; document.getElementById('2203.07848v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 figures, 1 table, 111 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Quantum Sci. Technol. 6 (2021) 014002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.14661">arXiv:2111.14661</a> <span> [<a href="https://arxiv.org/pdf/2111.14661">pdf</a>, <a href="https://arxiv.org/format/2111.14661">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> </div> <p class="title is-5 mathjax"> Fabry-Perot interferometer with quantum well mirror for controllable dispersion compensation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Mitryakhin%2C+V+N">Victor N. Mitryakhin</a>, <a href="/search/?searchtype=author&query=Shapochkin%2C+P+Y">Pavel Yu. Shapochkin</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yury P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">Sergey A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovcjus%2C+V+A">Vyacheslav A. Lovcjus</a>, <a href="/search/?searchtype=author&query=Kapitonov%2C+Y+V">Yury V. Kapitonov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.14661v1-abstract-short" style="display: inline;"> In this work we propose a controllable dispersion compensation mirror based on Fabry-Perot interferometer with quantum well. The choice of the parameters of the heterostructure and experiment geometry makes it possible to introduce negative dispersion in narrow spectral region with maintaining the constant reflection coefficient. Feasibility of this concept is proved experimentally by measurements… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.14661v1-abstract-full').style.display = 'inline'; document.getElementById('2111.14661v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.14661v1-abstract-full" style="display: none;"> In this work we propose a controllable dispersion compensation mirror based on Fabry-Perot interferometer with quantum well. The choice of the parameters of the heterostructure and experiment geometry makes it possible to introduce negative dispersion in narrow spectral region with maintaining the constant reflection coefficient. Feasibility of this concept is proved experimentally by measurements of the reflectivity form InGaAs/GaAs quantum well. The control of quantum well exciton parameters could be used to switch the dispersion compensation on and off. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.14661v1-abstract-full').style.display = 'none'; document.getElementById('2111.14661v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.01404">arXiv:2110.01404</a> <span> [<a href="https://arxiv.org/pdf/2110.01404">pdf</a>, <a href="https://arxiv.org/format/2110.01404">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/5.0064369">10.1063/5.0064369 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Digital Feedback System for Advanced Ion Manipulation Techniques in Penning Traps </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Herkenhoff%2C+J">Jost Herkenhoff</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">Daniel Lange</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.01404v1-abstract-short" style="display: inline;"> The possibility to apply active feedback to a single ion in a Penning trap using a fully digital system is demonstrated. Previously realized feedback systems rely on analog circuits that are susceptible to environmental fluctuations and long term drifts, as well as being limited to the specific task they were designed for. The presented system is implemented using an FPGA-based platform (STEMlab),… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01404v1-abstract-full').style.display = 'inline'; document.getElementById('2110.01404v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.01404v1-abstract-full" style="display: none;"> The possibility to apply active feedback to a single ion in a Penning trap using a fully digital system is demonstrated. Previously realized feedback systems rely on analog circuits that are susceptible to environmental fluctuations and long term drifts, as well as being limited to the specific task they were designed for. The presented system is implemented using an FPGA-based platform (STEMlab), offering greater flexibility, higher temporal stability and the possibility for highly dynamic variation of feedback parameters. The system's capabilities were demonstrated by applying feedback to the ion detection system primarily consisting of a resonant circuit. This allowed shifts in its resonance frequency of up to several kHz and free modification of its quality factor within two orders of magnitude, which reduces the temperature of a single ion by a factor of 6. Furthermore, a phase-sensitive detection technique for the axial ion oscillation was implemented, which reduces the current measurement time by two orders of magnitude while simultaneously eliminating model-related systematic uncertainties. The use of FPGA technology allowed the implementation of a fully-featured data acquisition system, making it possible to realize feedback techniques that require constant monitoring of the ion signal. This was successfully used to implement a single-ion self-excited oscillator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01404v1-abstract-full').style.display = 'none'; document.getElementById('2110.01404v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">The following article has been accepted by Review of Scientific Instruments. After it is published, it will be found at https://aip.scitation.org/journal/rsi</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.07039">arXiv:2108.07039</a> <span> [<a href="https://arxiv.org/pdf/2108.07039">pdf</a>, <a href="https://arxiv.org/format/2108.07039">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.127.072502">10.1103/PhysRevLett.127.072502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $\text{Direct}~Q\text{-Value Determination of the}~尾^-~\text{Decay of} ~^{187}\text{Re}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Filianin%2C+P">P. Filianin</a>, <a href="/search/?searchtype=author&query=Lyu%2C+C">C. Lyu</a>, <a href="/search/?searchtype=author&query=Door%2C+M">M. Door</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">W. J. Huang</a>, <a href="/search/?searchtype=author&query=Haverkort%2C+M">M. Haverkort</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">P. Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">C. H. Keitel</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">K. Kromer</a>, <a href="/search/?searchtype=author&query=Lange%2C+D">D. Lange</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Y. N. Novikov</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">R. X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Ch. Schweiger</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">S. Sturm</a>, <a href="/search/?searchtype=author&query=Ulmer%2C+S">S. Ulmer</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Z. Harman</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2108.07039v1-abstract-short" style="display: inline;"> The cyclotron frequency ratio of $^{187}\mathrm{Os}^{29+}$ to $^{187}\mathrm{Re}^{29+}$ ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of $R=1.000\:000\:013\:882(5)$ is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multico… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.07039v1-abstract-full').style.display = 'inline'; document.getElementById('2108.07039v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.07039v1-abstract-full" style="display: none;"> The cyclotron frequency ratio of $^{187}\mathrm{Os}^{29+}$ to $^{187}\mathrm{Re}^{29+}$ ions was measured with the Penning-trap mass spectrometer PENTATRAP. The achieved result of $R=1.000\:000\:013\:882(5)$ is to date the most precise such measurement performed on ions. Furthermore, the total binding-energy difference of the 29 missing electrons in Re and Os was calculated by relativistic multiconfiguration methods, yielding the value of $螖E = 53.5(10)$ eV. Finally, using the achieved results, the mass difference between neutral $^{187}$Re and $^{187}$Os, i.e., the $Q$ value of the $尾^-$ decay of $^{187}$Re, is determined to be 2470.9(13) eV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.07039v1-abstract-full').style.display = 'none'; document.getElementById('2108.07039v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 127 (2021) 072502 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09867">arXiv:2103.09867</a> <span> [<a href="https://arxiv.org/pdf/2103.09867">pdf</a>, <a href="https://arxiv.org/format/2103.09867">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> </div> <p class="title is-5 mathjax"> Dynamics and control of nonradiative excitons - free carriers mixture in GaAs/AlGaAs quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kurdyubov%2C+A+S">A. S. Kurdyubov</a>, <a href="/search/?searchtype=author&query=Trifonov%2C+A+V">A. V. Trifonov</a>, <a href="/search/?searchtype=author&query=Gribakin%2C+B+F">B. F. Gribakin</a>, <a href="/search/?searchtype=author&query=Grigoryev%2C+P+S">P. S. Grigoryev</a>, <a href="/search/?searchtype=author&query=Gerlovin%2C+I+Y">I. Ya. Gerlovin</a>, <a href="/search/?searchtype=author&query=Mikhailov%2C+A+V">A. V. Mikhailov</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=A%C3%9Fmann%2C+M">M. A脽mann</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+A+V">A. V. Kavokin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.09867v1-abstract-short" style="display: inline;"> Dynamics of nonradiative excitons with large in-plane wave vectors forming a so-called reservoir is experimentally studied in a high-quality semiconductor structure containing a 14-nm shallow GaAs/Al$_{0.03}$Ga$_{0.97}$As quantum well by means of the non-degenerate pump-probe spectroscopy. The exciton dynamics is visualized via the dynamic broadening of the heavy-hole and light-hole exciton resona… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09867v1-abstract-full').style.display = 'inline'; document.getElementById('2103.09867v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09867v1-abstract-full" style="display: none;"> Dynamics of nonradiative excitons with large in-plane wave vectors forming a so-called reservoir is experimentally studied in a high-quality semiconductor structure containing a 14-nm shallow GaAs/Al$_{0.03}$Ga$_{0.97}$As quantum well by means of the non-degenerate pump-probe spectroscopy. The exciton dynamics is visualized via the dynamic broadening of the heavy-hole and light-hole exciton resonances caused by the exciton-exciton scattering. Under the non-resonant excitation free carriers are optically generated. In this regime the exciton dynamics is strongly affected by the exciton-carrier scattering. In particular, if the carriers of one sign are prevailing, they efficiently deplete the reservoir of the nonradiative excitons inducing their scattering into the light cone. A simple model of the exciton dynamics is developed, which considers the energy relaxation of photocreated electrons and holes, their coupling into excitons, and exciton scattering into the light cone. The model well reproduces the exciton dynamics observed experimentally both at the resonant and nonresonant excitation. Moreover, it correctly describes the profiles of the photoluminescence pulses studied experimentally. The efficient exciton-electron interaction is further experimentally verified by the control of the exciton density in the reservoir when an additional excitation creates electrons depleting the reservoir. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09867v1-abstract-full').style.display = 'none'; document.getElementById('2103.09867v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 10 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.08369">arXiv:2010.08369</a> <span> [<a href="https://arxiv.org/pdf/2010.08369">pdf</a>, <a href="https://arxiv.org/format/2010.08369">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.103.235312">10.1103/PhysRevB.103.235312 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Long-living dark coherence brought to light by magnetic-field controlled photon echo </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Solovev%2C+I+A">I. A. Solovev</a>, <a href="/search/?searchtype=author&query=Yanibekov%2C+I+I">I. I. Yanibekov</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovcjus%2C+V+A">V. A. Lovcjus</a>, <a href="/search/?searchtype=author&query=Yugova%2C+I+A">I. A. Yugova</a>, <a href="/search/?searchtype=author&query=Poltavtsev%2C+S+V">S. V. Poltavtsev</a>, <a href="/search/?searchtype=author&query=Kapitonov%2C+Y+V">Yu. V. Kapitonov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.08369v1-abstract-short" style="display: inline;"> Larmor precession of the quasiparticle spin about a transverse magnetic field leads to the oscillations in the spontaneous photon echo signal due to the shuffling of the optical coherence between optically accessible (bright) and inaccessible (dark) states. Here we report on a new non-oscillating photon echo regime observed in the presence of non-equal dephasing rates of bright and dark states. Th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.08369v1-abstract-full').style.display = 'inline'; document.getElementById('2010.08369v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.08369v1-abstract-full" style="display: none;"> Larmor precession of the quasiparticle spin about a transverse magnetic field leads to the oscillations in the spontaneous photon echo signal due to the shuffling of the optical coherence between optically accessible (bright) and inaccessible (dark) states. Here we report on a new non-oscillating photon echo regime observed in the presence of non-equal dephasing rates of bright and dark states. This regime enables the observation of the long-living dark optical coherence. As a simple mechanical analogy, we suggest a charged particle moving in the magnetic field through the medium with anisotropic viscous friction. We demonstrate the dark coherence retrieval in the spontaneous photon echo from excitons in the InGaAs/GaAs quantum well. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.08369v1-abstract-full').style.display = 'none'; document.getElementById('2010.08369v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 103, 235312 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.14908">arXiv:2007.14908</a> <span> [<a href="https://arxiv.org/pdf/2007.14908">pdf</a>, <a href="https://arxiv.org/ps/2007.14908">ps</a>, <a href="https://arxiv.org/format/2007.14908">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/RevModPhys.92.045007">10.1103/RevModPhys.92.045007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutrinoless Double-Electron Capture </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Danevich%2C+F+A">F. A. Danevich</a>, <a href="/search/?searchtype=author&query=Tretyak%2C+V+I">V. I. Tretyak</a>, <a href="/search/?searchtype=author&query=Kovalenko%2C+S">Sergey Kovalenko</a>, <a href="/search/?searchtype=author&query=Krivoruchenko%2C+M+I">M. I. Krivoruchenko</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Suhonen%2C+J">J. Suhonen</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.14908v1-abstract-short" style="display: inline;"> Double-beta processes play a key role in the exploration of neutrino and weak interaction properties, and in the searches for effects beyond the Standard Model. During the last half century many attempts were undertaken to search for double-beta decay with emission of two electrons, especially for its neutrinoless mode ($0\nu2尾^-$), the latter being still not observed. Double-electron capture (2EC… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.14908v1-abstract-full').style.display = 'inline'; document.getElementById('2007.14908v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.14908v1-abstract-full" style="display: none;"> Double-beta processes play a key role in the exploration of neutrino and weak interaction properties, and in the searches for effects beyond the Standard Model. During the last half century many attempts were undertaken to search for double-beta decay with emission of two electrons, especially for its neutrinoless mode ($0\nu2尾^-$), the latter being still not observed. Double-electron capture (2EC) was not in focus so far because of its in general lower transition probability. However, the rate of neutrinoless double-electron capture ($0\nu2$EC) can experience a resonance enhancement by many orders of magnitude in case the initial and final states are energetically degenerate. In the resonant case, the sensitivity of the $0\nu2$EC process can approach the sensitivity of the $0\nu2尾^-$ decay in the search for the Majorana mass of neutrinos, right-handed currents, and other new physics. We present an overview of the main experimental and theoretical results obtained during the last decade in this field. The experimental part outlines search results of 2EC processes and measurements of the decay energies for possible resonant $0谓$2EC transitions. An unprecedented precision in the determination of decay energies with Penning traps has allowed one to refine the values of the degeneracy parameter for all previously known near-resonant decays and has reduced the rather large uncertainties in the estimate of the $0\nu2$EC half-lives. The theoretical part contains an updated analysis of the electron shell effects and an overview of the nuclear structure models, in which the nuclear matrix elements of the $0\nu2$EC decays are calculated. One can conclude that the decay probability of $0谓$2EC can experience a significant enhancement in several nuclides. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.14908v1-abstract-full').style.display = 'none'; document.getElementById('2007.14908v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">68 pages, 14 tables, 19 figures, accepted for publication in Reviews of Modern Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Rev. Mod. Phys. 92, 045007 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.04892">arXiv:2005.04892</a> <span> [<a href="https://arxiv.org/pdf/2005.04892">pdf</a>, <a href="https://arxiv.org/format/2005.04892">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41586-020-2221-0">10.1038/s41586-020-2221-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Detection of metastable electronic states by Penning trap mass spectrometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima Xenia Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Bekker%2C+H">Hendrik Bekker</a>, <a href="/search/?searchtype=author&query=Bra%C3%9F%2C+M">Martin Bra脽</a>, <a href="/search/?searchtype=author&query=Cakir%2C+H">Halil Cakir</a>, <a href="/search/?searchtype=author&query=L%C3%B3pez-Urrutia%2C+J+R+C">Jos茅 R. Crespo L贸pez-Urrutia</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Harman%2C+Z">Zoltan Harman</a>, <a href="/search/?searchtype=author&query=Haverkort%2C+M+W">Maurits W. Haverkort</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">Wen Jia Huang</a>, <a href="/search/?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/?searchtype=author&query=Keitel%2C+C+H">Christoph Helmut Keitel</a>, <a href="/search/?searchtype=author&query=K%C3%B6nig%2C+C+M">Charlotte Maria K枚nig</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=M%C3%BCller%2C+M">Marius M眉ller</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yuri N. Novikov</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">Sven Sturm</a>, <a href="/search/?searchtype=author&query=Ulmer%2C+S">Stefan Ulmer</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Ssergey Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.04892v1-abstract-short" style="display: inline;"> State-of-the-art optical clocks achieve fractional precisions of $10^{-18}$ and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Promising candidates for novel clocks are highly charged ions (HCIs) and nuclear transitions, which are largely insensitive to external perturbations and reach wavelengths beyond the optical range, now becoming accessible to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.04892v1-abstract-full').style.display = 'inline'; document.getElementById('2005.04892v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.04892v1-abstract-full" style="display: none;"> State-of-the-art optical clocks achieve fractional precisions of $10^{-18}$ and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Promising candidates for novel clocks are highly charged ions (HCIs) and nuclear transitions, which are largely insensitive to external perturbations and reach wavelengths beyond the optical range, now becoming accessible to frequency combs. However, insufficiently accurate atomic structure calculations still hinder the identification of suitable transitions in HCIs. Here, we report on the discovery of a long-lived metastable electronic state in a HCI by measuring the mass difference of the ground and the excited state in Re, the first non-destructive, direct determination of an electronic excitation energy. This result agrees with our advanced calculations, and we confirmed them with an Os ion with the same electronic configuration. We used the high-precision Penning-trap mass spectrometer PENTATRAP, unique in its synchronous use of five individual traps for simultaneous mass measurements. The cyclotron frequency ratio $R$ of the ion in the ground state to the metastable state could be determined to a precision of $未R=1\cdot 10^{-11}$, unprecedented in the heavy atom regime. With a lifetime of about 130 days, the potential soft x-ray frequency reference at $谓=4.86\cdot 10^{16}\,\text{Hz}$ has a linewidth of only $螖谓\approx 5\cdot 10^{-8}\,\text{Hz}$, and one of the highest electronic quality factor ($Q=\frac谓{螖谓}\approx 10^{24}$) ever seen in an experiment. Our low uncertainty enables searching for more HCI soft x-ray clock transitions, needed for promising precision studies of fundamental physics in a thus far unexplored frontier. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.04892v1-abstract-full').style.display = 'none'; document.getElementById('2005.04892v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature 581, 42-46 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.05075">arXiv:2001.05075</a> <span> [<a href="https://arxiv.org/pdf/2001.05075">pdf</a>, <a href="https://arxiv.org/format/2001.05075">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.092502">10.1103/PhysRevLett.124.092502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First glimpse of the $N=82$ shell closure below $Z=50$ from masses of neutron-rich cadmium isotopes and isomers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Manea%2C+V">V. Manea</a>, <a href="/search/?searchtype=author&query=Karthein%2C+J">J. Karthein</a>, <a href="/search/?searchtype=author&query=Atanasov%2C+D">D. Atanasov</a>, <a href="/search/?searchtype=author&query=Bender%2C+M">M. Bender</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Cocolios%2C+T+E">T. E. Cocolios</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Herlert%2C+A">A. Herlert</a>, <a href="/search/?searchtype=author&query=Holt%2C+J+D">J. D. Holt</a>, <a href="/search/?searchtype=author&query=Huang%2C+W+J">W. J. Huang</a>, <a href="/search/?searchtype=author&query=Litvinov%2C+Y+A">Yu. A. Litvinov</a>, <a href="/search/?searchtype=author&query=Lunney%2C+D">D. Lunney</a>, <a href="/search/?searchtype=author&query=Men%C3%A9ndez%2C+J">J. Men茅ndez</a>, <a href="/search/?searchtype=author&query=Mougeot%2C+M">M. Mougeot</a>, <a href="/search/?searchtype=author&query=Neidherr%2C+D">D. Neidherr</a>, <a href="/search/?searchtype=author&query=Schweikhard%2C+L">L. Schweikhard</a>, <a href="/search/?searchtype=author&query=Schwenk%2C+A">A. Schwenk</a>, <a href="/search/?searchtype=author&query=Simonis%2C+J">J. Simonis</a>, <a href="/search/?searchtype=author&query=Welker%2C+A">A. Welker</a>, <a href="/search/?searchtype=author&query=Wienholtz%2C+F">F. Wienholtz</a>, <a href="/search/?searchtype=author&query=Zuber%2C+K">K. Zuber</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2001.05075v2-abstract-short" style="display: inline;"> We probe the $N=82$ nuclear shell closure by mass measurements of neutron-rich cadmium isotopes with the ISOLTRAP spectrometer at ISOLDE-CERN. The new mass of $^{132}$Cd offers the first value of the $N=82$, two-neutron shell gap below $Z=50$ and confirms the phenomenon of mutually enhanced magicity at $^{132}$Sn. Using the recently implemented phase-imaging ion-cyclotron-resonance method, the ord… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.05075v2-abstract-full').style.display = 'inline'; document.getElementById('2001.05075v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.05075v2-abstract-full" style="display: none;"> We probe the $N=82$ nuclear shell closure by mass measurements of neutron-rich cadmium isotopes with the ISOLTRAP spectrometer at ISOLDE-CERN. The new mass of $^{132}$Cd offers the first value of the $N=82$, two-neutron shell gap below $Z=50$ and confirms the phenomenon of mutually enhanced magicity at $^{132}$Sn. Using the recently implemented phase-imaging ion-cyclotron-resonance method, the ordering of the low-lying isomers in $^{129}$Cd and their energies are determined. The new experimental findings are used to test large-scale shell-model, mean-field and beyond-mean-field calculations, as well as the ab initio valence-space in-medium similarity renormalization group. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.05075v2-abstract-full').style.display = 'none'; document.getElementById('2001.05075v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 5 figures; reference added, minor editorial corrections</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 092502 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.05519">arXiv:1911.05519</a> <span> [<a href="https://arxiv.org/pdf/1911.05519">pdf</a>, <a href="https://arxiv.org/format/1911.05519">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/1.5128331">10.1063/1.5128331 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Production of highly charged ions of rare species by laser-induced desorption inside an electron beam ion trap </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Schweiger%2C+C">Christoph Schweiger</a>, <a href="/search/?searchtype=author&query=K%C3%B6nig%2C+C">Charlotte K枚nig</a>, <a href="/search/?searchtype=author&query=L%C3%B3pez-Urrutia%2C+J+R+C">Jos茅 R. Crespo L贸pez-Urrutia</a>, <a href="/search/?searchtype=author&query=Door%2C+M">Menno Door</a>, <a href="/search/?searchtype=author&query=Dorrer%2C+H">Holger Dorrer</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Christoph E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Huang%2C+W">Wenjia Huang</a>, <a href="/search/?searchtype=author&query=Kromer%2C+K">Kathrin Kromer</a>, <a href="/search/?searchtype=author&query=Micke%2C+P">Peter Micke</a>, <a href="/search/?searchtype=author&query=M%C3%BCller%2C+M">Marius M眉ller</a>, <a href="/search/?searchtype=author&query=Renisch%2C+D">Dennis Renisch</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">Alexander Rischka</a>, <a href="/search/?searchtype=author&query=Sch%C3%BCssler%2C+R+X">Rima X. Sch眉ssler</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1911.05519v1-abstract-short" style="display: inline;"> This paper reports on the development and testing of a novel, highly efficient technique for the injection of very rare species into electron beam ion traps (EBITs) for the production of highly charged ions (HCI). It relies on in-trap laser-induced desorption of atoms from a sample brought very close to the electron beam resulting in a very high capture efficiency in the EBIT. We have demonstrated… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.05519v1-abstract-full').style.display = 'inline'; document.getElementById('1911.05519v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.05519v1-abstract-full" style="display: none;"> This paper reports on the development and testing of a novel, highly efficient technique for the injection of very rare species into electron beam ion traps (EBITs) for the production of highly charged ions (HCI). It relies on in-trap laser-induced desorption of atoms from a sample brought very close to the electron beam resulting in a very high capture efficiency in the EBIT. We have demonstrated a steady production of HCI of the stable isotope $^{165}\mathrm{Ho}$ from samples of only $10^{12}$ atoms ($\sim$ 300 pg) in charge states up to 45+. HCI of these species can be subsequently extracted for use in other experiments or stored in the trapping volume of the EBIT for spectroscopic measurements. The high efficiency of this technique expands the range of rare isotope HCIs available for high-precision nuclear mass and spectroscopic measurements. A first application of this technique is the production of HCI of the synthetic radioisotope $^{163}\mathrm{Ho}$ for a high-precision measurement of the $Q_{\mathrm{EC}}$-value of the electron capture in $^{163}\mathrm{Ho}$ within the Electron Capture in Holmium experiment (ECHo collaboration) ultimately leading to a measurement of the electron neutrino mass with an uncertainty on the sub-eV level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.05519v1-abstract-full').style.display = 'none'; document.getElementById('1911.05519v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.05510">arXiv:1905.05510</a> <span> [<a href="https://arxiv.org/pdf/1905.05510">pdf</a>, <a href="https://arxiv.org/format/1905.05510">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10751-019-1601-z">10.1007/s10751-019-1601-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct decay-energy measurement as a route to the neutrino mass </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Karthein%2C+J">Jonas Karthein</a>, <a href="/search/?searchtype=author&query=Atanasov%2C+D">Dinko Atanasov</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">Klaus Blaum</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P">Pavel Filianin</a>, <a href="/search/?searchtype=author&query=Lunney%2C+D">David Lunney</a>, <a href="/search/?searchtype=author&query=Manea%2C+V">Vladimir Manea</a>, <a href="/search/?searchtype=author&query=Mougeot%2C+M">Maxime Mougeot</a>, <a href="/search/?searchtype=author&query=Neidherr%2C+D">Dennis Neidherr</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y">Yuri Novikov</a>, <a href="/search/?searchtype=author&query=Schweikhard%2C+L">Lutz Schweikhard</a>, <a href="/search/?searchtype=author&query=Welker%2C+A">Andree Welker</a>, <a href="/search/?searchtype=author&query=Wienholtz%2C+F">Frank Wienholtz</a>, <a href="/search/?searchtype=author&query=Zuber%2C+K">Kai Zuber</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1905.05510v1-abstract-short" style="display: inline;"> A high-precision measurement of the $^{131}$Cs$ \rightarrow ^{131}$Xe ground-to-ground-state electron-capture $Q_{\textrm{EC}}$-value was performed using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The novel PI-ICR technique allowed to reach a relative mass precision $未m/m$ of $1.4\cdot10^{-9}$. A mass resolving power $m/螖m$ exceeding $1\cdot10^7$ was obtained in only $1\,$s trapping time. Allo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.05510v1-abstract-full').style.display = 'inline'; document.getElementById('1905.05510v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.05510v1-abstract-full" style="display: none;"> A high-precision measurement of the $^{131}$Cs$ \rightarrow ^{131}$Xe ground-to-ground-state electron-capture $Q_{\textrm{EC}}$-value was performed using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The novel PI-ICR technique allowed to reach a relative mass precision $未m/m$ of $1.4\cdot10^{-9}$. A mass resolving power $m/螖m$ exceeding $1\cdot10^7$ was obtained in only $1\,$s trapping time. Allowed electron-capture transitions with sub-keV or lower decay energies are of high interest for the direct determination of the $谓_e$ mass. The new measurement improves the uncertainty on the ground-to-ground-state $Q_{\textrm{EC}}$-value by a factor 25 precluding the $^{131}$Cs$ \rightarrow ^{131}$Xe pair as a feasible candidate for the direct determination of the $谓_e$ mass. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.05510v1-abstract-full').style.display = 'none'; document.getElementById('1905.05510v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted by Hyperfine Interactions. TCP18 conference proceeding. 10 pages, 4 figures, 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.08635">arXiv:1903.08635</a> <span> [<a href="https://arxiv.org/pdf/1903.08635">pdf</a>, <a href="https://arxiv.org/format/1903.08635">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1364/JOSAA.36.001505">10.1364/JOSAA.36.001505 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Modelling and optimization of the excitonic diffraction grating </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Shapochkin%2C+P+Y">P. Yu. Shapochkin</a>, <a href="/search/?searchtype=author&query=Petrov%2C+Y+V">Yu. V. Petrov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovcjus%2C+V+A">V. A. Lovcjus</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Kapitonov%2C+Y+V">Yu. V. Kapitonov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1903.08635v2-abstract-short" style="display: inline;"> Periodical spatial modulation of the excitonic resonance in a quantum well could lead to the formation of a new highly directional and resonant coherent optical response -- resonant diffraction. Such excitonic diffraction gratings were demonstrated in epitaxially grown quantum wells patterned by the low-dose ion beam irradiation before or after the growth. In this paper we present a theoretical mo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.08635v2-abstract-full').style.display = 'inline'; document.getElementById('1903.08635v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.08635v2-abstract-full" style="display: none;"> Periodical spatial modulation of the excitonic resonance in a quantum well could lead to the formation of a new highly directional and resonant coherent optical response -- resonant diffraction. Such excitonic diffraction gratings were demonstrated in epitaxially grown quantum wells patterned by the low-dose ion beam irradiation before or after the growth. In this paper we present a theoretical model of the resonant diffraction formation based on the step-by-step approximation of the Maxwell equation solution. The resulting theory allows us to reliably describe experimental data, as well as to predict the way to increase the diffraction efficiency. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.08635v2-abstract-full').style.display = 'none'; document.getElementById('1903.08635v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Shortened version</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.08049">arXiv:1809.08049</a> <span> [<a href="https://arxiv.org/pdf/1809.08049">pdf</a>, <a href="https://arxiv.org/format/1809.08049">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.122.147401">10.1103/PhysRevLett.122.147401 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nanosecond-scale magneto-exciton energy oscillations in quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Trifonov%2C+A+V">A. V. Trifonov</a>, <a href="/search/?searchtype=author&query=Khramtsov%2C+E+S">E. S. Khramtsov</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+K+V">K. V. Kavokin</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+A+V">A. V. Kavokin</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Y. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Shapochkin%2C+P+Y">P. Yu. Shapochkin</a>, <a href="/search/?searchtype=author&query=Bayer%2C+M">M. Bayer</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.08049v1-abstract-short" style="display: inline;"> We report on the experimental evidence for a nanosecond time-scale spin memory based on nonradiative excitons. The effect manifests itself in magnetic-field-induced oscillations of the energy of the optically active (radiative) excitons. The oscillations detected by a spectrally-resolved pump-probe technique applied to a GaAs/AlGaAs quantum well structure in a transverse magnetic field persist ove… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.08049v1-abstract-full').style.display = 'inline'; document.getElementById('1809.08049v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.08049v1-abstract-full" style="display: none;"> We report on the experimental evidence for a nanosecond time-scale spin memory based on nonradiative excitons. The effect manifests itself in magnetic-field-induced oscillations of the energy of the optically active (radiative) excitons. The oscillations detected by a spectrally-resolved pump-probe technique applied to a GaAs/AlGaAs quantum well structure in a transverse magnetic field persist over a time scale, which is orders of magnitude longer than the characteristic decoherence time in the system. The effect is attributed to the spin-dependent electron-electron exchange interaction of the optically active and inactive excitons. The spin relaxation time of the electrons belonging to nonradiative excitons appears to be much longer than the hole spin relaxation time. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.08049v1-abstract-full').style.display = 'none'; document.getElementById('1809.08049v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages main text, 7 pages appendix, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 122, 147401 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1608.04774">arXiv:1608.04774</a> <span> [<a href="https://arxiv.org/pdf/1608.04774">pdf</a>, <a href="https://arxiv.org/format/1608.04774">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.93.205425">10.1103/PhysRevB.93.205425 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Inversion of Zeeman splitting of exciton states in InGaAs quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Grigoryev%2C+P+S">P. S. Grigoryev</a>, <a href="/search/?searchtype=author&query=Yugov%2C+O+A">O. A. Yugov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Sapega%2C+V+F">V. F. Sapega</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1608.04774v1-abstract-short" style="display: inline;"> Zeeman splitting of quantum-confined states of excitons in InGaAs quantum wells (QWs) is experimentally found to depend strongly on quantization energy. Moreover, it changes sign when the quantization energy increases with a decrease in the QW width. In the 87-nm QW, the sign change is observed for the excited quantum-confined states, which are above the ground state only by a few meV. A two-step… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.04774v1-abstract-full').style.display = 'inline'; document.getElementById('1608.04774v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1608.04774v1-abstract-full" style="display: none;"> Zeeman splitting of quantum-confined states of excitons in InGaAs quantum wells (QWs) is experimentally found to depend strongly on quantization energy. Moreover, it changes sign when the quantization energy increases with a decrease in the QW width. In the 87-nm QW, the sign change is observed for the excited quantum-confined states, which are above the ground state only by a few meV. A two-step approach for the numerical solution of the two-particle Schroedinger equation, taking into account the Coulomb interaction and valence-band coupling, is used for a theoretical justification of the observed phenomenon. The calculated variation of the g-factor convincingly follows the dependencies obtained in the experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.04774v1-abstract-full').style.display = 'none'; document.getElementById('1608.04774v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 August, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 93, 205425, (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.04394">arXiv:1604.04394</a> <span> [<a href="https://arxiv.org/pdf/1604.04394">pdf</a>, <a href="https://arxiv.org/ps/1604.04394">ps</a>, <a href="https://arxiv.org/format/1604.04394">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.90.042501">10.1103/PhysRevC.90.042501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct determination of the atomic mass difference of Re187 and Os187 for neutrino physics and cosmochronology </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Nesterenko%2C+D+A">D. A. Nesterenko</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Block%2C+M">M. Block</a>, <a href="/search/?searchtype=author&query=Chenmarev%2C+S">S. Chenmarev</a>, <a href="/search/?searchtype=author&query=Doerr%2C+A">A. Doerr</a>, <a href="/search/?searchtype=author&query=Droese%2C+C">C. Droese</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P+E">P. E. Filianin</a>, <a href="/search/?searchtype=author&query=Goncharov%2C+M">M. Goncharov</a>, <a href="/search/?searchtype=author&query=Ramirez%2C+E+M">E. Minaya Ramirez</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Schweikhard%2C+L">L. Schweikhard</a>, <a href="/search/?searchtype=author&query=Simon%2C+V+V">V. V. Simon</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1604.04394v1-abstract-short" style="display: inline;"> For the first time a direct determination of the atomic mass difference of 187Re and 187Os has been performed with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. The obtained value of 2492(30stat)(15sys) eV is in excellent agreement with the Q values determined indirectly with microcalorimetry and thus resolves a long-standing discre… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.04394v1-abstract-full').style.display = 'inline'; document.getElementById('1604.04394v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.04394v1-abstract-full" style="display: none;"> For the first time a direct determination of the atomic mass difference of 187Re and 187Os has been performed with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. The obtained value of 2492(30stat)(15sys) eV is in excellent agreement with the Q values determined indirectly with microcalorimetry and thus resolves a long-standing discrepancy with older proportional counter measurements. This is essential for the determination of the neutrino mass from the beta-decay of 187Re as planned in future microcalorimetric measurements. In addition, an accurate mass difference of 187Re and 187Os is also important for the assessment of 187Re for cosmochronology. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.04394v1-abstract-full').style.display = 'none'; document.getElementById('1604.04394v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 90 (2014) 042501(R) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.04210">arXiv:1604.04210</a> <span> [<a href="https://arxiv.org/pdf/1604.04210">pdf</a>, <a href="https://arxiv.org/ps/1604.04210">ps</a>, <a href="https://arxiv.org/format/1604.04210">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.115.062501">10.1103/PhysRevLett.115.062501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct Measurement of the Mass Difference of Ho163 and Dy163 Solves the Q-Value Puzzle for the Neutrino Mass Determination </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Block%2C+M">M. Block</a>, <a href="/search/?searchtype=author&query=Chenmarev%2C+S">S. Chenmarev</a>, <a href="/search/?searchtype=author&query=Dorrer%2C+H">H. Dorrer</a>, <a href="/search/?searchtype=author&query=Duellmann%2C+C+E">Ch. E. Duellmann</a>, <a href="/search/?searchtype=author&query=Enss%2C+C">C. Enss</a>, <a href="/search/?searchtype=author&query=Filianin%2C+P+E">P. E. Filianin</a>, <a href="/search/?searchtype=author&query=Gastaldo%2C+L">L. Gastaldo</a>, <a href="/search/?searchtype=author&query=Goncharov%2C+M">M. Goncharov</a>, <a href="/search/?searchtype=author&query=Koester%2C+U">U. Koester</a>, <a href="/search/?searchtype=author&query=Lautenschlaeger%2C+F">F. Lautenschlaeger</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Rischka%2C+A">A. Rischka</a>, <a href="/search/?searchtype=author&query=Schuessler%2C+R+X">R. X. Schuessler</a>, <a href="/search/?searchtype=author&query=Schweikhard%2C+L">L. Schweikhard</a>, <a href="/search/?searchtype=author&query=Tuerler%2C+A">A. Tuerler</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1604.04210v1-abstract-short" style="display: inline;"> The atomic mass difference of 163Ho and 163Dy has been directly measured with the Penning trap mass spectrometer SHIPTRAP applying the novel phase imaging ion cyclotron resonance technique. Our measurement has solved the long standing problem of large discrepancies in the Q value of the electron capture in 163Ho determined by different techniques. Our measured mass difference shifts the current Q… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.04210v1-abstract-full').style.display = 'inline'; document.getElementById('1604.04210v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.04210v1-abstract-full" style="display: none;"> The atomic mass difference of 163Ho and 163Dy has been directly measured with the Penning trap mass spectrometer SHIPTRAP applying the novel phase imaging ion cyclotron resonance technique. Our measurement has solved the long standing problem of large discrepancies in the Q value of the electron capture in 163Ho determined by different techniques. Our measured mass difference shifts the current Q value of 2555(16) eV evaluated in the Atomic Mass Evaluation 2012 [G. Audi et al., Chin. Phys. C 36, 1157 (2012)] by more than 7 sigma to 2833(30stat)(15sys) eV/c2. With the new mass difference it will be possible, e.g., to reach in the first phase of the ECHo experiment a statistical sensitivity to the neutrino mass below 10 eV, which will reduce its present upper limit by more than an order of magnitude. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.04210v1-abstract-full').style.display = 'none'; document.getElementById('1604.04210v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 115 (2015) 062501 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.04816">arXiv:1602.04816</a> <span> [<a href="https://arxiv.org/pdf/1602.04816">pdf</a>, <a href="https://arxiv.org/format/1602.04816">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Astrophysics of Galaxies">astro-ph.GA</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2017/01/025">10.1088/1475-7516/2017/01/025 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A White Paper on keV Sterile Neutrino Dark Matter </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Adhikari%2C+R">R. Adhikari</a>, <a href="/search/?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/?searchtype=author&query=Ky%2C+N+A">N. Anh Ky</a>, <a href="/search/?searchtype=author&query=Araki%2C+T">T. Araki</a>, <a href="/search/?searchtype=author&query=Archidiacono%2C+M">M. Archidiacono</a>, <a href="/search/?searchtype=author&query=Bahr%2C+M">M. Bahr</a>, <a href="/search/?searchtype=author&query=Baur%2C+J">J. Baur</a>, <a href="/search/?searchtype=author&query=Behrens%2C+J">J. Behrens</a>, <a href="/search/?searchtype=author&query=Bezrukov%2C+F">F. Bezrukov</a>, <a href="/search/?searchtype=author&query=Dev%2C+P+S+B">P. S. Bhupal Dev</a>, <a href="/search/?searchtype=author&query=Borah%2C+D">D. Borah</a>, <a href="/search/?searchtype=author&query=Boyarsky%2C+A">A. Boyarsky</a>, <a href="/search/?searchtype=author&query=de+Gouvea%2C+A">A. de Gouvea</a>, <a href="/search/?searchtype=author&query=Pires%2C+C+A+d+S">C. A. de S. Pires</a>, <a href="/search/?searchtype=author&query=de+Vega%2C+H+J">H. J. de Vega</a>, <a href="/search/?searchtype=author&query=Dias%2C+A+G">A. G. Dias</a>, <a href="/search/?searchtype=author&query=Di+Bari%2C+P">P. Di Bari</a>, <a href="/search/?searchtype=author&query=Djurcic%2C+Z">Z. Djurcic</a>, <a href="/search/?searchtype=author&query=Dolde%2C+K">K. Dolde</a>, <a href="/search/?searchtype=author&query=Dorrer%2C+H">H. Dorrer</a>, <a href="/search/?searchtype=author&query=Durero%2C+M">M. Durero</a>, <a href="/search/?searchtype=author&query=Dragoun%2C+O">O. Dragoun</a>, <a href="/search/?searchtype=author&query=Drewes%2C+M">M. Drewes</a>, <a href="/search/?searchtype=author&query=Drexlin%2C+G">G. Drexlin</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Ch. E. D眉llmann</a> , et al. (111 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.04816v2-abstract-short" style="display: inline;"> We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile ne… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.04816v2-abstract-full').style.display = 'inline'; document.getElementById('1602.04816v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.04816v2-abstract-full" style="display: none;"> We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. Here, we first review the physics motivation for sterile neutrino Dark Matter, based on challenges and tensions in purely cold Dark Matter scenarios. We then round out the discussion by critically summarizing all known constraints on sterile neutrino Dark Matter arising from astrophysical observations, laboratory experiments, and theoretical considerations. In this context, we provide a balanced discourse on the possibly positive signal from X-ray observations. Another focus of the paper concerns the construction of particle physics models, aiming to explain how sterile neutrinos of keV-scale masses could arise in concrete settings beyond the Standard Model of elementary particle physics. The paper ends with an extensive review of current and future astrophysical and laboratory searches, highlighting new ideas and their experimental challenges, as well as future perspectives for the discovery of sterile neutrinos. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.04816v2-abstract-full').style.display = 'none'; document.getElementById('1602.04816v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 February, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">v2: 257 pages, 57 figures, content matches published version [JCAP01(2017)025]; over 100 authors from several different communities</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.03720">arXiv:1602.03720</a> <span> [<a href="https://arxiv.org/pdf/1602.03720">pdf</a>, <a href="https://arxiv.org/format/1602.03720">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.spmi.2016.07.008">10.1016/j.spmi.2016.07.008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Excitons in asymmetric quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Grigoryev%2C+P+S">P. S. Grigoryev</a>, <a href="/search/?searchtype=author&query=Kurdyubov%2C+A+S">A. S. Kurdyubov</a>, <a href="/search/?searchtype=author&query=Kuznetsova%2C+M+S">M. S. Kuznetsova</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Shapochkin%2C+P+Y">P. Yu. Shapochkin</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.03720v1-abstract-short" style="display: inline;"> Resonance dielectric response of excitons is studied for the high-quality GaAs/InGaAs heterostructures with wide asymmetric quantum wells (QWs). To highlight effects of the QW asymmetry, we have grown and studied several heterostructures with nominally square QWs as well as with triangle-like QWs. Several quantum confined exciton states are experimentally observed as narrow exciton resonances with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.03720v1-abstract-full').style.display = 'inline'; document.getElementById('1602.03720v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.03720v1-abstract-full" style="display: none;"> Resonance dielectric response of excitons is studied for the high-quality GaAs/InGaAs heterostructures with wide asymmetric quantum wells (QWs). To highlight effects of the QW asymmetry, we have grown and studied several heterostructures with nominally square QWs as well as with triangle-like QWs. Several quantum confined exciton states are experimentally observed as narrow exciton resonances with various profiles. A standard approach for the phenomenological analysis of the profiles is generalized by introducing of different phase shifts for the light waves reflected from the QWs at different exciton resonances. Perfect agreement of the phenomenological fit to the experimentally observed exciton spectra for high-quality structures allowed us to obtain reliable parameters of the exciton resonances including the exciton transition energies, the radiative broadenings, and the phase shifts. A direct numerical solution of Schr枚dinger equation for the heavy-hole excitons in asymmetric QWs is used for microscopic modeling of the exciton resonances. Remarkable agreement with the experiment is achieved when the effect of indium segregation during the heterostructure growth is taken into account. The segregation results in a modification of the potential profile, in particular, in an asymmetry of the nominally square QWs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.03720v1-abstract-full').style.display = 'none'; document.getElementById('1602.03720v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Superlattices and Microstructures 97, 452, (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.04968">arXiv:1508.04968</a> <span> [<a href="https://arxiv.org/pdf/1508.04968">pdf</a>, <a href="https://arxiv.org/format/1508.04968">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/srep21062">10.1038/srep21062 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spin-noise-based magnetometry of an $n$-doped GaAs microcavity in the field of elliptically polarized light </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Ryzhov%2C+I+I">I. I. Ryzhov</a>, <a href="/search/?searchtype=author&query=Kozlov%2C+G+G">G. G. Kozlov</a>, <a href="/search/?searchtype=author&query=Smirnov%2C+D+S">D. S. Smirnov</a>, <a href="/search/?searchtype=author&query=Glazov%2C+M+M">M. M. Glazov</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+K+V">K. V. Kavokin</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+A+V">A. V. Kavokin</a>, <a href="/search/?searchtype=author&query=Zapasskii%2C+V+S">V. S. Zapasskii</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1508.04968v1-abstract-short" style="display: inline;"> Recently reported optical nuclear orientation in the $n$-doped GaAs microcavity under pumping in nominal transparency region of the crystal [Appl. Phys. Lett. $\mathbf{106}$, 242405 (2015)] has arisen a number of questions, the main of them concerning mechanisms of angular momentum transfer from the light to the nuclear spin system and the nature of the light-related magnetic fields accompanying t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.04968v1-abstract-full').style.display = 'inline'; document.getElementById('1508.04968v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.04968v1-abstract-full" style="display: none;"> Recently reported optical nuclear orientation in the $n$-doped GaAs microcavity under pumping in nominal transparency region of the crystal [Appl. Phys. Lett. $\mathbf{106}$, 242405 (2015)] has arisen a number of questions, the main of them concerning mechanisms of angular momentum transfer from the light to the nuclear spin system and the nature of the light-related magnetic fields accompanying the optical nuclear polarization. In this paper, we use the spin noise spectroscopy for magnetometric purposes, particularly, to study effective fields acting upon electron spin system of an $n$-GaAs layer inside a high-Q microcavity in the presence of elliptically polarized probe beam. In addition to the external magnetic field applied to the sample in the Voigt geometry and the Overhauser field created by optically oriented nuclei, the spin noise spectrum reveals an additional effective, "optical," magnetic field produced by elliptically polarized probe itself. This field is directed along the light propagation axis, with its sign being determined by the sign of the probe helicity and its magnitude depending on degree of circular polarization and intensity of the probe beam. We analyze properties of this optical magnetic field and suggest that it results from the optical Stark effect in the field of the elliptically polarized electromagnetic wave. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.04968v1-abstract-full').style.display = 'none'; document.getElementById('1508.04968v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9+ pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sci. Reps. 6, 21062 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.00480">arXiv:1508.00480</a> <span> [<a href="https://arxiv.org/pdf/1508.00480">pdf</a>, <a href="https://arxiv.org/format/1508.00480">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/1.4948664">10.1063/1.4948664 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Excitons in square quantum wells: microscopic modeling and experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Khramtsov%2C+E+S">E. S. Khramtsov</a>, <a href="/search/?searchtype=author&query=Belov%2C+P+A">P. A. Belov</a>, <a href="/search/?searchtype=author&query=Grigoryev%2C+P+S">P. S. Grigoryev</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a>, <a href="/search/?searchtype=author&query=Verbin%2C+S+Y">S. Yu. Verbin</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Yakovlev%2C+S+L">S. L. Yakovlev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1508.00480v1-abstract-short" style="display: inline;"> The binding energy and the corresponding wave function of excitons in GaAs-based finite square quantum wells (QWs) are calculated by the direct numerical solution of the three-dimensional Schroedinger equation. The precise results for the lowest exciton state are obtained by the Hamiltonian discretization using the high-order finite-difference scheme. The microscopic calculations are compared with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.00480v1-abstract-full').style.display = 'inline'; document.getElementById('1508.00480v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.00480v1-abstract-full" style="display: none;"> The binding energy and the corresponding wave function of excitons in GaAs-based finite square quantum wells (QWs) are calculated by the direct numerical solution of the three-dimensional Schroedinger equation. The precise results for the lowest exciton state are obtained by the Hamiltonian discretization using the high-order finite-difference scheme. The microscopic calculations are compared with the results obtained by the standard variational approach. The exciton binding energies found by two methods coincide within 0.1 meV for the wide range of QW widths. The radiative decay rate is calculated for QWs of various widths using the exciton wave functions obtained by direct and variational methods. The radiative decay rates are confronted with the experimental data measured for high-quality GaAs/AlGaAs and InGaAs/GaAs QW heterostructures grown by molecular beam epitaxy. The calculated and measured values are in good agreement, though slight differences with earlier calculations of the radiative decay rate are observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.00480v1-abstract-full').style.display = 'none'; document.getElementById('1508.00480v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 10 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.04198">arXiv:1507.04198</a> <span> [<a href="https://arxiv.org/pdf/1507.04198">pdf</a>, <a href="https://arxiv.org/format/1507.04198">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.92.201301">10.1103/PhysRevB.92.201301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiple quantum beats of quantum confined exciton states in InGaAs/GaAs quantum well </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Trifonov%2C+A+V">A. V. Trifonov</a>, <a href="/search/?searchtype=author&query=Gerlovin%2C+I+Y">I. Ya. Gerlovin</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a>, <a href="/search/?searchtype=author&query=Yugova%2C+I+A">I. A. Yugova</a>, <a href="/search/?searchtype=author&query=Cherbunin%2C+R+V">R. V. Cherbunin</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+A+V">A. V. Kavokin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1507.04198v1-abstract-short" style="display: inline;"> Multiple quantum beats of a system of the coherently excited quantum confined exciton states in a high-quality heterostructure with a wide InGaAs/GaAs quantum well are experimentally detected by the spectrally resolved pump-probe method for the first time. The beat signal is observed as at positive as at negative delays between the pump and probe pulses. A theoretical model is developed, which all… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.04198v1-abstract-full').style.display = 'inline'; document.getElementById('1507.04198v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.04198v1-abstract-full" style="display: none;"> Multiple quantum beats of a system of the coherently excited quantum confined exciton states in a high-quality heterostructure with a wide InGaAs/GaAs quantum well are experimentally detected by the spectrally resolved pump-probe method for the first time. The beat signal is observed as at positive as at negative delays between the pump and probe pulses. A theoretical model is developed, which allows one to attribute the QBs at negative delay to the four-wave mixing (FWM) signal detected at the non-standard direction. The beat signal is strongly enhanced by the interference of the FWM wave with the polarization created by the probe pulse. At positive delay, the QBs are due to the mutual interference of the quantum confined exciton states. Several QB frequencies are observed in the experiments, which coincide with the interlevel spacings in the exciton system. The decay time for QBs is of order of several picoseconds at both the positive and negative delays. They are close to the relaxation time of exciton population that allows one to consider the exciton depopulation as the main mechanism of the coherence relaxation in the system under study. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.04198v1-abstract-full').style.display = 'none'; document.getElementById('1507.04198v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 3 figures,</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 92, 201301 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.02105">arXiv:1505.02105</a> <span> [<a href="https://arxiv.org/pdf/1505.02105">pdf</a>, <a href="https://arxiv.org/format/1505.02105">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1002/pssb.201552735">10.1002/pssb.201552735 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Decrease of heavy-hole exciton mass induced by uniaxial stress in GaAs/AlGaAs quantum well </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Loginov%2C+D+K">D. K. Loginov</a>, <a href="/search/?searchtype=author&query=Grigoryev%2C+P+S">P. S. Grigoryev</a>, <a href="/search/?searchtype=author&query=Ubiyvovk%2C+E+V">E. V. Ubiyvovk</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Lovtcius%2C+V+A">V. A. Lovtcius</a>, <a href="/search/?searchtype=author&query=Petrov%2C+Y+P">Yu. P. Petrov</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1505.02105v1-abstract-short" style="display: inline;"> It is experimentally shown that the pressure applied along the twofold symmetry axis of a heterostructure with a wide GaAs/AlGaAs quantum well leads to considerable modification of the polariton reflectance spectra. This effect is treated as the stress-induced decrease of the heavy-hole exciton mass. Theoretical modeling of the effect supports this assumption. The 5\%-decrease of the exciton mass… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.02105v1-abstract-full').style.display = 'inline'; document.getElementById('1505.02105v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.02105v1-abstract-full" style="display: none;"> It is experimentally shown that the pressure applied along the twofold symmetry axis of a heterostructure with a wide GaAs/AlGaAs quantum well leads to considerable modification of the polariton reflectance spectra. This effect is treated as the stress-induced decrease of the heavy-hole exciton mass. Theoretical modeling of the effect supports this assumption. The 5\%-decrease of the exciton mass is obtained at pressure P=0.23 GPa. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.02105v1-abstract-full').style.display = 'none'; document.getElementById('1505.02105v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.7051">arXiv:1412.7051</a> <span> [<a href="https://arxiv.org/pdf/1412.7051">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> </div> <p class="title is-5 mathjax"> Effect of irradiation by He+ and Ga+ ions on 2D-exciton susceptibility of the InGaAs/GaAs quantum-well structures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Kapitonov%2C+Y+V">Yu. V. Kapitonov</a>, <a href="/search/?searchtype=author&query=Shapochkin%2C+P+Y">P. Yu. Shapochkin</a>, <a href="/search/?searchtype=author&query=Petrov%2C+Y+V">Yu. V. Petrov</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Dolgikh%2C+Y+K">Yu. K. Dolgikh</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Ovsyankin%2C+V+V">V. V. Ovsyankin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1412.7051v1-abstract-short" style="display: inline;"> The effect of irradiation by 30-keV Ga+ and 35-keV He+ ions (in relatively small doses) on the excitonic reflectivity spectra of single InGaAs/GaAs quantum-well structures is studied. It is found that the irradiation results in decreasing intensity and broadening of the excitonic resonances in the reflectivity spectra for all the doses. It is shown that these changes are not related to a decrease… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.7051v1-abstract-full').style.display = 'inline'; document.getElementById('1412.7051v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.7051v1-abstract-full" style="display: none;"> The effect of irradiation by 30-keV Ga+ and 35-keV He+ ions (in relatively small doses) on the excitonic reflectivity spectra of single InGaAs/GaAs quantum-well structures is studied. It is found that the irradiation results in decreasing intensity and broadening of the excitonic resonances in the reflectivity spectra for all the doses. It is shown that these changes are not related to a decrease of the exciton transition oscillator strength and, therefore, to the irradiation-induced destruction of the excitonic states, but can be rather ascribed to a common cause, namely, to inhomogeneous broadening of the excitonic resonances proportional to the exposure dose.A tentative model of the irradiation-induced broadening is considered, with the mechanism of the process being a consequence of scat-tering of the 2D excitons by structural defects associated with Ga(In) and As vacancies arising upon collisions of the high-energy ions with regular atoms of the crystal structure. The model is used to compare experimental dependence of efficiency of the Ga+-ion-induced broad-ening on distance of the quantum well from the irradiated surface with a similar dependence calculated using the Monte-Carlo technique. A discrepancy between the results of simulation and experimental data is discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.7051v1-abstract-full').style.display = 'none'; document.getElementById('1412.7051v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.0443">arXiv:1412.0443</a> <span> [<a href="https://arxiv.org/pdf/1412.0443">pdf</a>, <a href="https://arxiv.org/format/1412.0443">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.91.115307">10.1103/PhysRevB.91.115307 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nontrivial relaxation dynamics of excitons in high-quality InGaAs/GaAs quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Trifonov%2C+A+V">A. V. Trifonov</a>, <a href="/search/?searchtype=author&query=Korotan%2C+S+N">S. N. Korotan</a>, <a href="/search/?searchtype=author&query=Kurdyubov%2C+A+S">A. S. Kurdyubov</a>, <a href="/search/?searchtype=author&query=Gerlovin%2C+I+Y">I. Ya. Gerlovin</a>, <a href="/search/?searchtype=author&query=Ignatiev%2C+I+V">I. V. Ignatiev</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Dolgikh%2C+Y+K">Yu. K. Dolgikh</a>, <a href="/search/?searchtype=author&query=Ovsyankin%2C+V+V">V. V. Ovsyankin</a>, <a href="/search/?searchtype=author&query=Kavokin%2C+A+V">A. V. Kavokin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1412.0443v2-abstract-short" style="display: inline;"> Photoluminescence (PL) and reflectivity spectra of a high-quality InGaAs/GaAs quantum well structure reveal a series of ultra-narrow peaks attributed to the quantum confined exciton states. The intensity of these peaks decreases as a function of temperature, while the linewidths demonstrate a complex and peculiar behavior. At low pumping the widths of all peaks remain quite narrow ($< 0.1$ meV) in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0443v2-abstract-full').style.display = 'inline'; document.getElementById('1412.0443v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.0443v2-abstract-full" style="display: none;"> Photoluminescence (PL) and reflectivity spectra of a high-quality InGaAs/GaAs quantum well structure reveal a series of ultra-narrow peaks attributed to the quantum confined exciton states. The intensity of these peaks decreases as a function of temperature, while the linewidths demonstrate a complex and peculiar behavior. At low pumping the widths of all peaks remain quite narrow ($< 0.1$ meV) in the whole temperature range studied, $4 - 30K$. At the stronger pumping, the linewidth first increases and than drops down with the temperature rise. Pump-probe experiments show two characteristic time scales in the exciton decay, $< 10$ps and $15 - 45ns$, respectively. We interpret all these data by an interplay between the exciton recombination within the light cone, the exciton relaxation from a non-radiative reservoir to the light cone, and the thermal dissociation of the non-radiative excitons. The broadening of the low energy exciton lines is governed by the radiative recombination and scattering with reservoir excitons while for the higher energy states the linewidths are also dependent on the acoustic phonon relaxation processes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0443v2-abstract-full').style.display = 'none'; document.getElementById('1412.0443v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 8 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.7670">arXiv:1406.7670</a> <span> [<a href="https://arxiv.org/pdf/1406.7670">pdf</a>, <a href="https://arxiv.org/format/1406.7670">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.ssc.2014.09.005">10.1016/j.ssc.2014.09.005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Extremely low inhomogeneous broadening of exciton lines in shallow (In,Ga)As/GaAs quantum wells </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Poltavtsev%2C+S+V">S. V. Poltavtsev</a>, <a href="/search/?searchtype=author&query=Efimov%2C+Y+P">Yu. P. Efimov</a>, <a href="/search/?searchtype=author&query=Dolgikh%2C+Y+K">Yu. K. Dolgikh</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Petrov%2C+V+V">V. V. Petrov</a>, <a href="/search/?searchtype=author&query=Ovsyankin%2C+V+V">V. V. Ovsyankin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1406.7670v1-abstract-short" style="display: inline;"> We study radiative linewidth of exciton resonance in shallow In$_x$Ga$_{1-x}$As/GaAs single quantum wells as a function of indium concentration in the range $x=0.02...0.10$ and well thickness in the range $L_Z=1...30$ nm using the method of Brewster reflection spectroscopy. Record linewidths of heavy-hole exciton resonance of about 130...180 $渭$eV are measured in reflection spectra for single quan… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.7670v1-abstract-full').style.display = 'inline'; document.getElementById('1406.7670v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.7670v1-abstract-full" style="display: none;"> We study radiative linewidth of exciton resonance in shallow In$_x$Ga$_{1-x}$As/GaAs single quantum wells as a function of indium concentration in the range $x=0.02...0.10$ and well thickness in the range $L_Z=1...30$ nm using the method of Brewster reflection spectroscopy. Record linewidths of heavy-hole exciton resonance of about 130...180 $渭$eV are measured in reflection spectra for single quantum wells with $L_Z=2$ nm and $x=0.02$ at temperature 9 K. In these spectra, the non-radiative linewidth including inhomogeneous broadening can be comparable or even less than radiative linewidth. It is shown that radiative linewidth weakly depends on $x$ and $L_Z$ in these ranges. In multiple-quantum-well Bragg structure with ten periods radiative linewidth exceeds inhomogeneous broadening by 4 times. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.7670v1-abstract-full').style.display = 'none'; document.getElementById('1406.7670v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.6477">arXiv:1406.6477</a> <span> [<a href="https://arxiv.org/pdf/1406.6477">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1126/science.1225636">10.1126/science.1225636 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct mapping of nuclear shell effects in the heaviest elements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Ramirez%2C+E+M">E. Minaya Ramirez</a>, <a href="/search/?searchtype=author&query=Ackermann%2C+D">D. Ackermann</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Block%2C+M">M. Block</a>, <a href="/search/?searchtype=author&query=Droese%2C+C">C. Droese</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Ch. E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Dworschak%2C+M">M. Dworschak</a>, <a href="/search/?searchtype=author&query=Eibach%2C+M">M. Eibach</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Haettner%2C+E">E. Haettner</a>, <a href="/search/?searchtype=author&query=Herfurth%2C+F">F. Herfurth</a>, <a href="/search/?searchtype=author&query=He%C3%9Fberger%2C+F+P">F. P. He脽berger</a>, <a href="/search/?searchtype=author&query=Hofmann%2C+S">S. Hofmann</a>, <a href="/search/?searchtype=author&query=Ketelaer%2C+J">J. Ketelaer</a>, <a href="/search/?searchtype=author&query=Marx%2C+G">G. Marx</a>, <a href="/search/?searchtype=author&query=Mazzocco%2C+M">M. Mazzocco</a>, <a href="/search/?searchtype=author&query=Nesterenko%2C+D">D. Nesterenko</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Pla%C3%9F%2C+W+R">W. R. Pla脽</a>, <a href="/search/?searchtype=author&query=Rodr%C3%ADguez%2C+D">D. Rodr铆guez</a>, <a href="/search/?searchtype=author&query=Scheidenberger%2C+C">C. Scheidenberger</a>, <a href="/search/?searchtype=author&query=Schweikhard%2C+L">L. Schweikhard</a>, <a href="/search/?searchtype=author&query=Thirolf%2C+P+G">P. G. Thirolf</a>, <a href="/search/?searchtype=author&query=Weber%2C+C">C. Weber</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1406.6477v1-abstract-short" style="display: inline;"> Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an "island of stability" of superheavy elements. The predicted center at proton number $Z=114,120$, or $126$ and neutron number $N=184$ has been substantiated by the recent synthesis of new elements up to $Z=118$. However the location of the center and the extension of the island of stability remain vague. High-pr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.6477v1-abstract-full').style.display = 'inline'; document.getElementById('1406.6477v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.6477v1-abstract-full" style="display: none;"> Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an "island of stability" of superheavy elements. The predicted center at proton number $Z=114,120$, or $126$ and neutron number $N=184$ has been substantiated by the recent synthesis of new elements up to $Z=118$. However the location of the center and the extension of the island of stability remain vague. High-precision mass spectrometry allows the direct measurement of nuclear binding energies and thus the determination of the strength of shell effects. Here, we present such measurements for nobelium and lawrencium isotopes, which also pin down the deformed shell gap at $N=152$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.6477v1-abstract-full').style.display = 'none'; document.getElementById('1406.6477v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> E.M. Ramirez, Science, 337 (2012) 1207 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1402.4400">arXiv:1402.4400</a> <span> [<a href="https://arxiv.org/pdf/1402.4400">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0954-3899/41/9/095004">10.1088/0954-3899/41/9/095004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> On the keV sterile neutrino search in electron capture </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Filianin%2C+P+E">P. E. Filianin</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S+A">S. A. Eliseev</a>, <a href="/search/?searchtype=author&query=Gastaldo%2C+L">L. Gastaldo</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Shabaev%2C+V+M">V. M. Shabaev</a>, <a href="/search/?searchtype=author&query=Tupitsyn%2C+I+I">I. I. Tupitsyn</a>, <a href="/search/?searchtype=author&query=Vergados%2C+J">J. Vergados</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1402.4400v1-abstract-short" style="display: inline;"> A joint effort of cryogenic microcalorimetry (CM) and high-precision Penning-trap mass spectrometry (PT-MS) in investigating atomic orbital electron capture (EC) can shed light on the possible existence of heavy sterile neutrinos with masses from 0.5 to 100 keV. Sterile neutrinos are expected to perturb the shape of the atomic de-excitation spectrum measured by CM after a capture of the atomic orb… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.4400v1-abstract-full').style.display = 'inline'; document.getElementById('1402.4400v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1402.4400v1-abstract-full" style="display: none;"> A joint effort of cryogenic microcalorimetry (CM) and high-precision Penning-trap mass spectrometry (PT-MS) in investigating atomic orbital electron capture (EC) can shed light on the possible existence of heavy sterile neutrinos with masses from 0.5 to 100 keV. Sterile neutrinos are expected to perturb the shape of the atomic de-excitation spectrum measured by CM after a capture of the atomic orbital electrons by a nucleus. This effect should be observable in the ratios of the capture probabilities from different orbits. The sensitivity of the ratio values to the contribution of sterile neutrinos strongly depends on how accurately the mass difference between the parent and the daughter nuclides of EC-transitions can be measured by, e.g., PT-MS. A comparison of such probability ratios in different isotopes of a certain chemical element allows one to exclude many systematic uncertainties and thus could make feasible a determination of the contribution of sterile neutrinos on a level below 1%. Several electron capture transitions suitable for such measurements are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.4400v1-abstract-full').style.display = 'none'; document.getElementById('1402.4400v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 February, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 9 figures, 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1309.5214">arXiv:1309.5214</a> <span> [<a href="https://arxiv.org/pdf/1309.5214">pdf</a>, <a href="https://arxiv.org/ps/1309.5214">ps</a>, <a href="https://arxiv.org/format/1309.5214">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10909-014-1187-4">10.1007/s10909-014-1187-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Electron Capture $^{163}$Ho Experiment ECHo: an overview </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Gastaldo%2C+L">L. Gastaldo</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Doerr%2C+A">A. Doerr</a>, <a href="/search/?searchtype=author&query=Duellmann%2C+C+E">Ch. E. Duellmann</a>, <a href="/search/?searchtype=author&query=Eberhardt%2C+K">K. Eberhardt</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Enss%2C+C">C. Enss</a>, <a href="/search/?searchtype=author&query=Faessler%2C+A">Amand Faessler</a>, <a href="/search/?searchtype=author&query=Fleischmann%2C+A">A. Fleischmann</a>, <a href="/search/?searchtype=author&query=Kempf%2C+S">S. Kempf</a>, <a href="/search/?searchtype=author&query=Krivoruchenko%2C+M">M. Krivoruchenko</a>, <a href="/search/?searchtype=author&query=Lahiri%2C+S">S. Lahiri</a>, <a href="/search/?searchtype=author&query=Maiti%2C+M">M. Maiti</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Ranitzsch%2C+P+C+-">P. C. -O. Ranitzsch</a>, <a href="/search/?searchtype=author&query=Simkovic%2C+F">F. Simkovic</a>, <a href="/search/?searchtype=author&query=Szusc%2C+Z">Z. Szusc</a>, <a href="/search/?searchtype=author&query=Wegner%2C+M">M. Wegner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1309.5214v1-abstract-short" style="display: inline;"> The determination of the absolute scale of the neutrino masses is one of the most challenging present questions in particle physics. The most stringent limit, $m(\bar谓_{\mathrm{e}})<2$eV, was achieved for the electron anti-neutrino mass \cite{numass}. Different approaches are followed to achieve a sensitivity on neutrino masses in the sub-eV range. Among them, experiments exploring the beta decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1309.5214v1-abstract-full').style.display = 'inline'; document.getElementById('1309.5214v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1309.5214v1-abstract-full" style="display: none;"> The determination of the absolute scale of the neutrino masses is one of the most challenging present questions in particle physics. The most stringent limit, $m(\bar谓_{\mathrm{e}})<2$eV, was achieved for the electron anti-neutrino mass \cite{numass}. Different approaches are followed to achieve a sensitivity on neutrino masses in the sub-eV range. Among them, experiments exploring the beta decay or electron capture of suitable nuclides can provide information on the electron neutrino mass value. We present the Electron Capture $^{163}$Ho experiment ECHo, which aims to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured energy spectrum following electron capture of $^{163}$Ho. A high precision and high statistics spectrum will be measured with arrays of metallic magnetic calorimeters. We discuss some of the essential aspects of ECHo to reach the proposed sensitivity: detector optimization and performance, multiplexed readout, $^{163}$Ho source production and purification, as well as a precise theoretical and experimental parameterization of the calorimetric EC spectrum including in particular the value of $Q_{\mathrm{EC}}$. We present preliminary results obtained with a first prototype of single channel detectors as well as a first 64-pixel chip with integrated micro-wave SQUID multiplexer, which will already allow to investigate $m(谓_{\mathrm{e}})$ in the eV range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1309.5214v1-abstract-full').style.display = 'none'; document.getElementById('1309.5214v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 September, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Contribution to the LTD15 Conference Proceedings</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1306.2655">arXiv:1306.2655</a> <span> [<a href="https://arxiv.org/pdf/1306.2655">pdf</a>, <a href="https://arxiv.org/ps/1306.2655">ps</a>, <a href="https://arxiv.org/format/1306.2655">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> The Electron Capture $^{163}$Ho Experiment ECHo </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Doerr%2C+A">A. Doerr</a>, <a href="/search/?searchtype=author&query=Duellmann%2C+C+E">C. E. Duellmann</a>, <a href="/search/?searchtype=author&query=Eberhardt%2C+K">K. Eberhardt</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Enss%2C+C">C. Enss</a>, <a href="/search/?searchtype=author&query=Faessler%2C+A">A. Faessler</a>, <a href="/search/?searchtype=author&query=Fleischmann%2C+A">A. Fleischmann</a>, <a href="/search/?searchtype=author&query=Gastaldo%2C+L">L. Gastaldo</a>, <a href="/search/?searchtype=author&query=Kempf%2C+S">S. Kempf</a>, <a href="/search/?searchtype=author&query=Krivoruchenko%2C+M">M. Krivoruchenko</a>, <a href="/search/?searchtype=author&query=Lahiri%2C+S">S. Lahiri</a>, <a href="/search/?searchtype=author&query=Maiti%2C+M">M. Maiti</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Ranitzsch%2C+P+C+-">P. C. -O. Ranitzsch</a>, <a href="/search/?searchtype=author&query=Simkovic%2C+F">F. Simkovic</a>, <a href="/search/?searchtype=author&query=Szusc%2C+Z">Z. Szusc</a>, <a href="/search/?searchtype=author&query=Wegner%2C+M">M. Wegner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1306.2655v1-abstract-short" style="display: inline;"> The determination of the absolute scale of the neutrino masses is one of the most challenging questions in particle physics. Different approaches are followed to achieve a sensitivity on neutrino masses in the sub-eV range. Among them, experiments exploring the beta decay and electron capture processes of suitable nuclides can provide necessary information on the electron neutrino mass value. In t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.2655v1-abstract-full').style.display = 'inline'; document.getElementById('1306.2655v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1306.2655v1-abstract-full" style="display: none;"> The determination of the absolute scale of the neutrino masses is one of the most challenging questions in particle physics. Different approaches are followed to achieve a sensitivity on neutrino masses in the sub-eV range. Among them, experiments exploring the beta decay and electron capture processes of suitable nuclides can provide necessary information on the electron neutrino mass value. In this talk we present the Electron Capture 163-Ho experiment ECHo, which aims to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured energy spectrum following the electron capture process of 163-Ho. A high precision and high statistics spectrum will be measured by means of low temperature magnetic calorimeter arrays. We present preliminary results obtained with a first prototype of single channel detectors as well as the participating groups and their on-going developments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.2655v1-abstract-full').style.display = 'none'; document.getElementById('1306.2655v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 June, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Part of the white paper for the NuMass 2013 Workshop (Milano, Italy 4-7 February 2013)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1209.5174">arXiv:1209.5174</a> <span> [<a href="https://arxiv.org/pdf/1209.5174">pdf</a>, <a href="https://arxiv.org/format/1209.5174">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.86.044604">10.1103/PhysRevC.86.044604 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Q value and half-life of double-electron capture in Os-184 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Smorra%2C+C">C. Smorra</a>, <a href="/search/?searchtype=author&query=Rodriguez%2C+T+R">T. R. Rodriguez</a>, <a href="/search/?searchtype=author&query=Beyer%2C+T">T. Beyer</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Block%2C+M">M. Block</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Ch. E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Eberhardt%2C+K">K. Eberhardt</a>, <a href="/search/?searchtype=author&query=Eibach%2C+M">M. Eibach</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Langanke%2C+K">K. Langanke</a>, <a href="/search/?searchtype=author&query=Martinez-Pinedo%2C+G">G. Martinez-Pinedo</a>, <a href="/search/?searchtype=author&query=Nagy%2C+S">Sz. Nagy</a>, <a href="/search/?searchtype=author&query=N%C3%B6rtersh%C3%A4user%2C+W">W. N枚rtersh盲user</a>, <a href="/search/?searchtype=author&query=Renisch%2C+D">D. Renisch</a>, <a href="/search/?searchtype=author&query=Shabaev%2C+V+M">V. M. Shabaev</a>, <a href="/search/?searchtype=author&query=Tupitsyn%2C+I+I">I. I. Tupitsyn</a>, <a href="/search/?searchtype=author&query=Zubova%2C+N+A">N. A. Zubova</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1209.5174v1-abstract-short" style="display: inline;"> Os-184 has been excluded as a promising candidate for the search of neutrinoless double-electron capture. High-precision mass measurements with the Penning-trap mass spectrometer TRIGA-TRAP resulted in a marginal resonant enhancement with = -8.89(58) keV excess energy to the 1322.152(22) keV 0+ excited state in W-184. State-of-the-art energy density functional calculations are applied for the eval… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1209.5174v1-abstract-full').style.display = 'inline'; document.getElementById('1209.5174v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1209.5174v1-abstract-full" style="display: none;"> Os-184 has been excluded as a promising candidate for the search of neutrinoless double-electron capture. High-precision mass measurements with the Penning-trap mass spectrometer TRIGA-TRAP resulted in a marginal resonant enhancement with = -8.89(58) keV excess energy to the 1322.152(22) keV 0+ excited state in W-184. State-of-the-art energy density functional calculations are applied for the evaluation of the nuclear matrix elements to the excited states predicting a strong suppression due to the large deformation of mother and daughter states. The half-life of the transition in Os-184 exceeds T_{1/2} > 1.3 10^{29} years for an effective neutrino mass of 1 eV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1209.5174v1-abstract-full').style.display = 'none'; document.getElementById('1209.5174v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 September, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">accepted in Phys. Rev. C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1201.4942">arXiv:1201.4942</a> <span> [<a href="https://arxiv.org/pdf/1201.4942">pdf</a>, <a href="https://arxiv.org/ps/1201.4942">ps</a>, <a href="https://arxiv.org/format/1201.4942">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.85.027601">10.1103/PhysRevC.85.027601 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct mass measurements of cadmium and palladium isotopes and their double-beta transition Q-values </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Smorra%2C+C">C. Smorra</a>, <a href="/search/?searchtype=author&query=Beyer%2C+T">T. Beyer</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Block%2C+M">M. Block</a>, <a href="/search/?searchtype=author&query=D%C3%BCllmann%2C+C+E">Ch. E. D眉llmann</a>, <a href="/search/?searchtype=author&query=Eberhardt%2C+K">K. Eberhardt</a>, <a href="/search/?searchtype=author&query=Eibach%2C+M">M. Eibach</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Nagy%2C+S">Sz. Nagy</a>, <a href="/search/?searchtype=author&query=N%C3%B6rtersh%C3%A4user%2C+W">W. N枚rtersh盲user</a>, <a href="/search/?searchtype=author&query=Renisch%2C+D">D. Renisch</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1201.4942v2-abstract-short" style="display: inline;"> The Q-value of the double-electron capture in Cd-108 has been determined to be (272.04 +/- 0.55) keV in a direct measurement with the double-Penning trap mass spectrometer TRIGA-TRAP. Based on this result a resonant enhancement of the decay rate of Cd-108 is excluded. We have confirmed the double-beta transition Q-values of Cd-106 and Pd-110 recently measured with the Penning-trap mass spectromete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1201.4942v2-abstract-full').style.display = 'inline'; document.getElementById('1201.4942v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1201.4942v2-abstract-full" style="display: none;"> The Q-value of the double-electron capture in Cd-108 has been determined to be (272.04 +/- 0.55) keV in a direct measurement with the double-Penning trap mass spectrometer TRIGA-TRAP. Based on this result a resonant enhancement of the decay rate of Cd-108 is excluded. We have confirmed the double-beta transition Q-values of Cd-106 and Pd-110 recently measured with the Penning-trap mass spectrometers SHIPTRAP and ISOLTRAP, respectively. Furthermore, the atomic masses of the involved nuclides Cd-106, Cd-108, Cd-110, Pd-106, Pd-108 and Pd-110 have been directly linked to the atomic mass standard. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1201.4942v2-abstract-full').style.display = 'none'; document.getElementById('1201.4942v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 January, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 January, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in Phys. Rev. C as brief report</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1111.6862">arXiv:1111.6862</a> <span> [<a href="https://arxiv.org/pdf/1111.6862">pdf</a>, <a href="https://arxiv.org/ps/1111.6862">ps</a>, <a href="https://arxiv.org/format/1111.6862">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.85.035503">10.1103/PhysRevC.85.035503 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evaluation of the resonance enhancement effect in neutrinoless double-electron capture in 152Gd, 164Er and 180W atoms </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Fang%2C+D">Dong-Lianf Fang</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Faessler%2C+A">Amand Faessler</a>, <a href="/search/?searchtype=author&query=Krivoruchenko%2C+M+I">M. I. Krivoruchenko</a>, <a href="/search/?searchtype=author&query=Rodin%2C+V">V. Rodin</a>, <a href="/search/?searchtype=author&query=Simkovic%2C+F">F. Simkovic</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1111.6862v1-abstract-short" style="display: inline;"> We study the resonant neutrinoless double-electron capture (0nECEC) in 152Gd, 164Er and 180W atoms, associated with the ground-state to ground-state nuclear transitions. The corresponding matrix elements are calculated within the deformed QRPA using the realistic Bonn-CD nucleon-nucleon interaction. The half-lives are estimated with the use of the most recent precision data on the Q-values of thes… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.6862v1-abstract-full').style.display = 'inline'; document.getElementById('1111.6862v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.6862v1-abstract-full" style="display: none;"> We study the resonant neutrinoless double-electron capture (0nECEC) in 152Gd, 164Er and 180W atoms, associated with the ground-state to ground-state nuclear transitions. The corresponding matrix elements are calculated within the deformed QRPA using the realistic Bonn-CD nucleon-nucleon interaction. The half-lives are estimated with the use of the most recent precision data on the Q-values of these processes. Perspectives of experimental search for the 0nECEC with the isotopes 152Gd, 164Er and 180W are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.6862v1-abstract-full').style.display = 'none'; document.getElementById('1111.6862v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1111.6377">arXiv:1111.6377</a> <span> [<a href="https://arxiv.org/pdf/1111.6377">pdf</a>, <a href="https://arxiv.org/ps/1111.6377">ps</a>, <a href="https://arxiv.org/format/1111.6377">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nuclphysa.2011.11.008">10.1016/j.nuclphysa.2011.11.008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing the nuclide 180W for neutrinoless double-electron capture exploration </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Droese%2C+C">C. Droese</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a>, <a href="/search/?searchtype=author&query=Block%2C+M">M. Block</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=Herfurth%2C+F">F. Herfurth</a>, <a href="/search/?searchtype=author&query=Ramirez%2C+E+M">E. Minaya Ramirez</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y+N">Yu. N. Novikov</a>, <a href="/search/?searchtype=author&query=Schweikhard%2C+L">L. Schweikhard</a>, <a href="/search/?searchtype=author&query=Shabaev%2C+V+M">V. M. Shabaev</a>, <a href="/search/?searchtype=author&query=Tupitsyn%2C+I+I">I. I. Tupitsyn</a>, <a href="/search/?searchtype=author&query=Wycech%2C+S">S. Wycech</a>, <a href="/search/?searchtype=author&query=Zuber%2C+K">K. Zuber</a>, <a href="/search/?searchtype=author&query=Zubova%2C+N+A">N. A. Zubova</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1111.6377v1-abstract-short" style="display: inline;"> The mass difference of the nuclides 180W and 180Hf has been measured with the Penning-trap mass spectrometer SHIPTRAP to investigate 180W as a possible candidate for the search for neutrinoless doubleelectron capture. The Q-value was measured to 143.20(27)keV. This value in combination with the calculations of the atomic electron wave functions and other parameters results in a half-life of the 0+… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.6377v1-abstract-full').style.display = 'inline'; document.getElementById('1111.6377v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.6377v1-abstract-full" style="display: none;"> The mass difference of the nuclides 180W and 180Hf has been measured with the Penning-trap mass spectrometer SHIPTRAP to investigate 180W as a possible candidate for the search for neutrinoless doubleelectron capture. The Q-value was measured to 143.20(27)keV. This value in combination with the calculations of the atomic electron wave functions and other parameters results in a half-life of the 0+ \rightarrow 0+ ground-state to ground-state double-electron capture transition of approximately 5\cdot10E27 years/<m_ee[eV]>^2. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.6377v1-abstract-full').style.display = 'none'; document.getElementById('1111.6377v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.2920">arXiv:1110.2920</a> <span> [<a href="https://arxiv.org/pdf/1110.2920">pdf</a>, <a href="https://arxiv.org/format/1110.2920">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s00340-011-4825-4">10.1007/s00340-011-4825-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The trap design of PENTATRAP </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/?searchtype=author&query=Roux%2C+C">C. Roux</a>, <a href="/search/?searchtype=author&query=B%C3%B6hm%2C+C">Ch. B枚hm</a>, <a href="/search/?searchtype=author&query=D%C3%B6rr%2C+A">A. D枚rr</a>, <a href="/search/?searchtype=author&query=Eliseev%2C+S">S. Eliseev</a>, <a href="/search/?searchtype=author&query=George%2C+S">S. George</a>, <a href="/search/?searchtype=author&query=Novikov%2C+Y">Yu. Novikov</a>, <a href="/search/?searchtype=author&query=Repp%2C+J">J. Repp</a>, <a href="/search/?searchtype=author&query=Sturm%2C+S">S. Sturm</a>, <a href="/search/?searchtype=author&query=Ulmer%2C+S">S. Ulmer</a>, <a href="/search/?searchtype=author&query=Blaum%2C+K">K. Blaum</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1110.2920v1-abstract-short" style="display: inline;"> A novel Penning trap tower consisting of five compensated cylindrical Penning traps is developed for the PENTATRAP mass spectrometer at the Max-Planck-Institut f眉r Kernphysik in Heidelberg, Germany. An analytical expression for the electrostatic potential inside the trap tower is derived to calculate standard Penning trap properties like the compensation of anharmonicities and an orthogonal geomet… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.2920v1-abstract-full').style.display = 'inline'; document.getElementById('1110.2920v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.2920v1-abstract-full" style="display: none;"> A novel Penning trap tower consisting of five compensated cylindrical Penning traps is developed for the PENTATRAP mass spectrometer at the Max-Planck-Institut f眉r Kernphysik in Heidelberg, Germany. An analytical expression for the electrostatic potential inside the trap tower is derived to calculate standard Penning trap properties like the compensation of anharmonicities and an orthogonal geometry of the trap electrodes. Since the PENTATRAP project described in the preceding article aims for ultra high-precision mass-ratio measurements of highly charged ions up to uranium, systematic effects for highly charged ions inside the trap tower are considered for the design process as well. Finally, a limit due to remaining anharmonic shifts at large amplitudes is estimated for the resulting geometry, which is important for phase-sensitive measurements of the reduced cyclotron frequency of the ions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.2920v1-abstract-full').style.display = 'none'; document.getElementById('1110.2920v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2011. </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Eliseev%2C+S&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a 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