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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <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/2407.10598">arXiv:2407.10598</a> <span> [<a href="https://arxiv.org/pdf/2407.10598">pdf</a>, <a href="https://arxiv.org/format/2407.10598">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Soft Condensed Matter">cond-mat.soft</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> </div> <p class="title is-5 mathjax"> X-ray diffraction reveals the consequences of strong deformation in thin smectic films: dilation and chevron formation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Niyonzima%2C+J+d+D">Jean de Dieu Niyonzima</a>, <a href="/search/cond-mat?searchtype=author&query=Jeridi%2C+H">Haifa Jeridi</a>, <a href="/search/cond-mat?searchtype=author&query=Essaoui%2C+L">Lamya Essaoui</a>, <a href="/search/cond-mat?searchtype=author&query=Tosarelli%2C+C">Caterina Tosarelli</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alina Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Coati%2C+A">Alessandro Coati</a>, <a href="/search/cond-mat?searchtype=author&query=Royer%2C+S">Sebastien Royer</a>, <a href="/search/cond-mat?searchtype=author&query=Trimaille%2C+I">Isabelle Trimaille</a>, <a href="/search/cond-mat?searchtype=author&query=Goldmann%2C+M">Michel Goldmann</a>, <a href="/search/cond-mat?searchtype=author&query=Gallas%2C+B">Bruno Gallas</a>, <a href="/search/cond-mat?searchtype=author&query=Constantin%2C+D">Doru Constantin</a>, <a href="/search/cond-mat?searchtype=author&query=Babonneau%2C+D">David Babonneau</a>, <a href="/search/cond-mat?searchtype=author&query=Garreau%2C+Y">Yves Garreau</a>, <a href="/search/cond-mat?searchtype=author&query=Croset%2C+B">Bernard Croset</a>, <a href="/search/cond-mat?searchtype=author&query=Kralj%2C+S">Samo Kralj</a>, <a href="/search/cond-mat?searchtype=author&query=Kamien%2C+R+D">Randall D. Kamien</a>, <a href="/search/cond-mat?searchtype=author&query=Lacaze%2C+E">Emmanuelle Lacaze</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="2407.10598v1-abstract-short" style="display: inline;"> Smectic liquid crystals can be viewed as model systems for lamellar structures for which there has been extensive theoretical development. We demonstrate that a nonlinear energy description is required with respect to the usual Landau-de Gennes elasticity in order to explain the observed layer spacing of highly curved smectic layers. Using X-ray diffraction we have quantitatively determined the di… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.10598v1-abstract-full').style.display = 'inline'; document.getElementById('2407.10598v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.10598v1-abstract-full" style="display: none;"> Smectic liquid crystals can be viewed as model systems for lamellar structures for which there has been extensive theoretical development. We demonstrate that a nonlinear energy description is required with respect to the usual Landau-de Gennes elasticity in order to explain the observed layer spacing of highly curved smectic layers. Using X-ray diffraction we have quantitatively determined the dilation of bent layers distorted by antagonistic anchoring (as high as 1.8% of dilation for the most bent smectic layers) and accurately described it by the minimal nonlinear expression for energy. We observe a 1掳 tilt of planar layers that are connected to the curved layers. This value is consistent with simple energetic calculations, demonstrating how the bending energy impacts the overall structure of a thin distorted smectic film. Finally, we show that combined X-ray measurements and theoretical modeling allow for the quantitative determination of the number of curved smectic layers and of the resulting thickness of the dilated region with unprecedented precision. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.10598v1-abstract-full').style.display = 'none'; document.getElementById('2407.10598v1-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, 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">6 pages with 6 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/2111.04329">arXiv:2111.04329</a> <span> [<a href="https://arxiv.org/pdf/2111.04329">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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="Mesoscale and Nanoscale Physics">cond-mat.mes-hall</span> </div> </div> <p class="title is-5 mathjax"> Structure of germanene/Al(111): a two-layers surface alloy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Zhang%2C+K">K. Zhang</a>, <a href="/search/cond-mat?searchtype=author&query=Sciacca%2C+D">D. Sciacca</a>, <a href="/search/cond-mat?searchtype=author&query=Hanf%2C+M+-">M. -C. Hanf</a>, <a href="/search/cond-mat?searchtype=author&query=Bernard%2C+R">R. Bernard</a>, <a href="/search/cond-mat?searchtype=author&query=Borensztein%2C+Y">Yves Borensztein</a>, <a href="/search/cond-mat?searchtype=author&query=Resta%2C+A">A. Resta</a>, <a href="/search/cond-mat?searchtype=author&query=Garreau%2C+Y">Y. Garreau</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">A. Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Coati%2C+A">A. Coati</a>, <a href="/search/cond-mat?searchtype=author&query=Lefebvre%2C+I">I. Lefebvre</a>, <a href="/search/cond-mat?searchtype=author&query=Derivaz%2C+M">M. Derivaz</a>, <a href="/search/cond-mat?searchtype=author&query=Pirri%2C+C">C. Pirri</a>, <a href="/search/cond-mat?searchtype=author&query=Sonnet%2C+P">P. Sonnet</a>, <a href="/search/cond-mat?searchtype=author&query=Stephan%2C+R">R. Stephan</a>, <a href="/search/cond-mat?searchtype=author&query=Pr%C3%A9vot%2C+G">G. Pr茅vot</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="2111.04329v1-abstract-short" style="display: inline;"> Unlike silicene, for which the demonstration of its existence has been done through numerous independent studies, the possibility of growing epitaxial germanene remains highly controversial. It has been recently shown by scanning tunneling microscopy that the (3 x 3) surface reconstruction formed upon Ge deposition on Al(111) presents a honeycomb structure, and it was assigned to a pure germanene… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.04329v1-abstract-full').style.display = 'inline'; document.getElementById('2111.04329v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.04329v1-abstract-full" style="display: none;"> Unlike silicene, for which the demonstration of its existence has been done through numerous independent studies, the possibility of growing epitaxial germanene remains highly controversial. It has been recently shown by scanning tunneling microscopy that the (3 x 3) surface reconstruction formed upon Ge deposition on Al(111) presents a honeycomb structure, and it was assigned to a pure germanene monolayer. Using quantitative measurements by surface X-ray diffraction compared to density functional theory calculations, we demonstrate that this Ge/Al(111) (3 x 3) reconstruction corresponds, in fact, to a mixed Ge--Al honeycomb layer on top of an alloyed interfacial layer. The model of a germanene monolayer on top of the Al(111) surface can be completely excluded. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.04329v1-abstract-full').style.display = 'none'; document.getElementById('2111.04329v1-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 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of Physical Chemistry C, American Chemical Society, 2021, \&\#x27E8;10.1021/acs.jpcc.1c07585\&\#x27E9 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.02020">arXiv:1802.02020</a> <span> [<a href="https://arxiv.org/pdf/1802.02020">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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/PhysRevMaterials.2.064410">10.1103/PhysRevMaterials.2.064410 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Co/Ni multilayers for spintronics: high spin-polarization and tunable magnetic anisotropy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Andrieu%2C+S">S. Andrieu</a>, <a href="/search/cond-mat?searchtype=author&query=Hauet%2C+T">T. Hauet</a>, <a href="/search/cond-mat?searchtype=author&query=Gottwald%2C+M">M. Gottwald</a>, <a href="/search/cond-mat?searchtype=author&query=Rajanikanth%2C+A">A. Rajanikanth</a>, <a href="/search/cond-mat?searchtype=author&query=Calmels%2C+L">L. Calmels</a>, <a href="/search/cond-mat?searchtype=author&query=Bataille%2C+A+M">A. M. Bataille</a>, <a href="/search/cond-mat?searchtype=author&query=Montaigne%2C+F">F. Montaigne</a>, <a href="/search/cond-mat?searchtype=author&query=Mangin%2C+S">S. Mangin</a>, <a href="/search/cond-mat?searchtype=author&query=Otero%2C+E">E. Otero</a>, <a href="/search/cond-mat?searchtype=author&query=Ohresser%2C+P">P. Ohresser</a>, <a href="/search/cond-mat?searchtype=author&query=Fevre%2C+P+L">P. Le Fevre</a>, <a href="/search/cond-mat?searchtype=author&query=Bertran%2C+F">F. Bertran</a>, <a href="/search/cond-mat?searchtype=author&query=Resta%2C+A">A. Resta</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">A. Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Coati%2C+A">A. Coati</a>, <a href="/search/cond-mat?searchtype=author&query=Garreau%2C+Y">Y. Garreau</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="1802.02020v1-abstract-short" style="display: inline;"> In this paper we analyze in details the electronic properties of (Co/Ni) multilayers, a model system for spintronics devices. We use magneto-optical Kerr (MOKE), spin-polarized photoemission spectroscopy (SRPES), x-ray magnetic circular dichroism (XMCD) and anomalous surface diffraction experiments to investigate the electronic properties and perpendicular magnetic anisotropy (PMA) in [Co(x)/Ni(y)… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.02020v1-abstract-full').style.display = 'inline'; document.getElementById('1802.02020v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.02020v1-abstract-full" style="display: none;"> In this paper we analyze in details the electronic properties of (Co/Ni) multilayers, a model system for spintronics devices. We use magneto-optical Kerr (MOKE), spin-polarized photoemission spectroscopy (SRPES), x-ray magnetic circular dichroism (XMCD) and anomalous surface diffraction experiments to investigate the electronic properties and perpendicular magnetic anisotropy (PMA) in [Co(x)/Ni(y)] single-crystalline stacks grown by molecular beam epitaxy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.02020v1-abstract-full').style.display = 'none'; document.getElementById('1802.02020v1-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">11 pages, 11 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. Materials 2, 064410 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1707.02232">arXiv:1707.02232</a> <span> [<a href="https://arxiv.org/pdf/1707.02232">pdf</a>, <a href="https://arxiv.org/format/1707.02232">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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.96.195304">10.1103/PhysRevB.96.195304 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The structure and evolution of semiconducting buffer graphene grown on SiC(0001) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Conrad%2C+M">M. Conrad</a>, <a href="/search/cond-mat?searchtype=author&query=Rault%2C+J">J. Rault</a>, <a href="/search/cond-mat?searchtype=author&query=Utsumi%2C+Y">Y. Utsumi</a>, <a href="/search/cond-mat?searchtype=author&query=Garreau%2C+Y">Y. Garreau</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">A. Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Coati%2C+A">A. Coati</a>, <a href="/search/cond-mat?searchtype=author&query=Rueff%2C+J+-">J. -P. Rueff</a>, <a href="/search/cond-mat?searchtype=author&query=Miceli%2C+P+F">P. F. Miceli</a>, <a href="/search/cond-mat?searchtype=author&query=Conrad%2C+E+H">E. H. Conrad</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="1707.02232v1-abstract-short" style="display: inline;"> Using highly controlled coverages of graphene on SiC(0001), we have studied the structure of the first graphene layer that grows on the SiC interface. This layer, known as the buffer layer, is semiconducting. Using x-ray reflectivity and x-ray standing waves analysis we have performed a comparative study of the buffer layer structure with and without an additional monolayer graphene layer above it… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.02232v1-abstract-full').style.display = 'inline'; document.getElementById('1707.02232v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.02232v1-abstract-full" style="display: none;"> Using highly controlled coverages of graphene on SiC(0001), we have studied the structure of the first graphene layer that grows on the SiC interface. This layer, known as the buffer layer, is semiconducting. Using x-ray reflectivity and x-ray standing waves analysis we have performed a comparative study of the buffer layer structure with and without an additional monolayer graphene layer above it. We show that no more than 26\% of the buffer carbon is covalently bonded to Si in the SiC interface. We also show that the top SiC bilayer is Si depleted and is the likely the cause of the incommensuration previously observed in this system. When a monolayer graphene layer forms above the buffer, the buffer layer becomes less corrugated with signs of a change in the bonding geometry with the SiC interface. At the same time, the entire SiC interface becomes more disordered, presumably due to entropy associated with the higher growth temperature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.02232v1-abstract-full').style.display = 'none'; document.getElementById('1707.02232v1-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> 7 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2017. </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">12 pages, 9 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 96, 195304 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.02114">arXiv:1610.02114</a> <span> [<a href="https://arxiv.org/pdf/1610.02114">pdf</a>, <a href="https://arxiv.org/format/1610.02114">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/10.1021/acs.nanolett.6b04196">10.1021/acs.nanolett.6b04196 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Wide bandgap semiconductor from a hidden 2D incommensurate graphene phase </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Conrad%2C+M">Matthew Conrad</a>, <a href="/search/cond-mat?searchtype=author&query=Wang%2C+F">Feng Wang</a>, <a href="/search/cond-mat?searchtype=author&query=Nevius%2C+M">Meredith Nevius</a>, <a href="/search/cond-mat?searchtype=author&query=Jinkins%2C+K">Katherine Jinkins</a>, <a href="/search/cond-mat?searchtype=author&query=Celis%2C+A">Arlensi煤 Celis</a>, <a href="/search/cond-mat?searchtype=author&query=Nair%2C+M">Maya Nair</a>, <a href="/search/cond-mat?searchtype=author&query=Taleb-Ibrahim%2C+A">Amina Taleb-Ibrahim</a>, <a href="/search/cond-mat?searchtype=author&query=Tejeda%2C+A">Antonio Tejeda</a>, <a href="/search/cond-mat?searchtype=author&query=Garreau%2C+Y">Yves Garreau</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alina Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Coati%2C+A">Alessandro Coati</a>, <a href="/search/cond-mat?searchtype=author&query=Miceli%2C+P">Paul Miceli</a>, <a href="/search/cond-mat?searchtype=author&query=Conrad%2C+E">Edward Conrad</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="1610.02114v2-abstract-short" style="display: inline;"> Producing a usable semiconducting form of graphene has plagued the development of graphene electronics for nearly two decades. Now that new preparation methods have become available, graphene's intrinsic properties can be measured and the search for semiconducting graphene has begun to produce results. This is the case of the first graphene "buffer" layer grown on SiC(0001) presented in this work.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02114v2-abstract-full').style.display = 'inline'; document.getElementById('1610.02114v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.02114v2-abstract-full" style="display: none;"> Producing a usable semiconducting form of graphene has plagued the development of graphene electronics for nearly two decades. Now that new preparation methods have become available, graphene's intrinsic properties can be measured and the search for semiconducting graphene has begun to produce results. This is the case of the first graphene "buffer" layer grown on SiC(0001) presented in this work. We show, contrary to assumptions of the last forty years, that the buffer graphene layer is not commensurate with SiC. The new modulated structure we've found resolves a long standing contradiction where ab initio calculations expect a metallic buffer, while experimentally it is found to be a semiconductor. Model calculations using the new incommensurate structure show that the semiconducting $蟺$-band character of the buffer comes from partially hybridized graphene incommensurate boundaries surrounding unperturbed graphene islands. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02114v2-abstract-full').style.display = 'none'; document.getElementById('1610.02114v2-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 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">17 pages, 4 figures, 1 table, 47 references, supplemental material: 15 pages, 4 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/1512.06837">arXiv:1512.06837</a> <span> [<a href="https://arxiv.org/pdf/1512.06837">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> <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/10.1021/acs.nanolett.5b02494">10.1021/acs.nanolett.5b02494 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing graphene 蠂(2) using a gold photon sieve </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Lobet%2C+M">Michael Lobet</a>, <a href="/search/cond-mat?searchtype=author&query=Sarrazin%2C+M">Michael Sarrazin</a>, <a href="/search/cond-mat?searchtype=author&query=Cecchet%2C+F">Francesca Cecchet</a>, <a href="/search/cond-mat?searchtype=author&query=Reckinger%2C+N">Nicolas Reckinger</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alexandru Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Colomer%2C+J">Jean-Fran莽ois Colomer</a>, <a href="/search/cond-mat?searchtype=author&query=Lis%2C+D">Dan Lis</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="1512.06837v1-abstract-short" style="display: inline;"> Nonlinear second harmonic optical activity of graphene covering a gold photon sieve was determined for different polarizations. The photon sieve consists of a subwavelength gold nanohole array placed on glass. It combines the benefits of efficient light trapping and surface plasmon propagation in order to unravel different elements of graphene second-order susceptibility 蠂(2). Those elements effic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.06837v1-abstract-full').style.display = 'inline'; document.getElementById('1512.06837v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.06837v1-abstract-full" style="display: none;"> Nonlinear second harmonic optical activity of graphene covering a gold photon sieve was determined for different polarizations. The photon sieve consists of a subwavelength gold nanohole array placed on glass. It combines the benefits of efficient light trapping and surface plasmon propagation in order to unravel different elements of graphene second-order susceptibility 蠂(2). Those elements efficiently contribute to second harmonic generation. In fact, the graphene- coated photon sieve produces a second harmonic intensity at least two orders of magnitude higher compared with a bare, flat gold layer and an order of magnitude coming from the plasmonic effect of the photon sieve; the remaining enhancement arises from the graphene layer itself. The measured second harmonic generation yield, supplemented by semianalytical computations, provides an original method to constrain the graphene 蠂(2) elements. The values obtained are |d_{31} + d_{33}| < 8.1 x 10^3 pm^2/V and |d_{15}| < 1.4 x 10^6 pm^2/V for a second harmonic signal at 780 nm. This original method can be applied to any kind of 2D materials covering such a plasmonic structure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.06837v1-abstract-full').style.display = 'none'; document.getElementById('1512.06837v1-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 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">8 pages, 5 figures, 1 table, supplementary materials (7 pages, 4 figures, 1 table), accepted for publication in Nano Letters</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nano Lett. 2016, 16, 48-54 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1504.05060">arXiv:1504.05060</a> <span> [<a href="https://arxiv.org/pdf/1504.05060">pdf</a>, <a href="https://arxiv.org/format/1504.05060">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Strongly Correlated Electrons">cond-mat.str-el</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.92.081110">10.1103/PhysRevB.92.081110 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Symmetry of the Fermi surface and evolution of the electronic structure across the paramagnetic-helimagnetic transition in MnSi/Si(111) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Nicolaou%2C+A">Alessandro Nicolaou</a>, <a href="/search/cond-mat?searchtype=author&query=Gatti%2C+M">Matteo Gatti</a>, <a href="/search/cond-mat?searchtype=author&query=Magnano%2C+E">Elena Magnano</a>, <a href="/search/cond-mat?searchtype=author&query=F%C3%A8vre%2C+P+L">Patrick Le F猫vre</a>, <a href="/search/cond-mat?searchtype=author&query=Bondino%2C+F">Federica Bondino</a>, <a href="/search/cond-mat?searchtype=author&query=Bertran%2C+F">Fran莽ois Bertran</a>, <a href="/search/cond-mat?searchtype=author&query=Tejeda%2C+A">Antonio Tejeda</a>, <a href="/search/cond-mat?searchtype=author&query=Sauvage-Simkin%2C+M">Mich猫le Sauvage-Simkin</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alina Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Garreau%2C+Y">Yves Garreau</a>, <a href="/search/cond-mat?searchtype=author&query=Coati%2C+A">Alessandro Coati</a>, <a href="/search/cond-mat?searchtype=author&query=Gu%C3%A9rin%2C+N">Nicolas Gu茅rin</a>, <a href="/search/cond-mat?searchtype=author&query=Parmigiani%2C+F">Fulvio Parmigiani</a>, <a href="/search/cond-mat?searchtype=author&query=Taleb-Ibrahimi%2C+A">Amina Taleb-Ibrahimi</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="1504.05060v1-abstract-short" style="display: inline;"> MnSi has been extensively studied for five decades, nonetheless detailed information on the Fermi surface (FS) symmetry is still lacking. This missed information prevented from a comprehensive understanding the nature of the magnetic interaction in this material. Here, by performing angle-resolved photoemission spectroscopy on high-quality MnSi films epitaxially grown on Si(111), we unveil the FS… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.05060v1-abstract-full').style.display = 'inline'; document.getElementById('1504.05060v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1504.05060v1-abstract-full" style="display: none;"> MnSi has been extensively studied for five decades, nonetheless detailed information on the Fermi surface (FS) symmetry is still lacking. This missed information prevented from a comprehensive understanding the nature of the magnetic interaction in this material. Here, by performing angle-resolved photoemission spectroscopy on high-quality MnSi films epitaxially grown on Si(111), we unveil the FS symmetry and the evolution of the electronic structure across the paramagnetic-helimagnetic transition at T$_C$ $\sim$ 40 K, along with the appearance of sharp quasiparticle emission below T$_C$. The shape of the resulting FS is found to fulfill robust nesting effects. These effects can be at the origin of strong magnetic fluctuations not accounted for by state-of-art quasiparticle self-consistent GW approximation. From this perspective, the unforeseen quasiparticle damping detected in the paramagnetic phase and relaxing only below T$_C$, along with the persistence of the d-bands splitting well above T$_C$, at odds with a simple Stoner model for itinerant magnetism, open the search for exotic magnetic interactions favored by FS nesting and affecting the quasiparticles lifetime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.05060v1-abstract-full').style.display = 'none'; document.getElementById('1504.05060v1-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 April, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 92, 081110 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1402.3117">arXiv:1402.3117</a> <span> [<a href="https://arxiv.org/pdf/1402.3117">pdf</a>, <a href="https://arxiv.org/ps/1402.3117">ps</a>, <a href="https://arxiv.org/format/1402.3117">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey 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/10.1088/0957-4484/25/14/145303">10.1088/0957-4484/25/14/145303 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Colloidal pattern replication through contact photolithography operated in a "Talbot-Fabry-Perot" regime </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Emplit%2C+A">Aline Emplit</a>, <a href="/search/cond-mat?searchtype=author&query=Lian%2C+J+X">Jian Xiang Lian</a>, <a href="/search/cond-mat?searchtype=author&query=Huynen%2C+I">Isabelle Huynen</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alexandru Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Sarrazin%2C+M">Michael Sarrazin</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="1402.3117v1-abstract-short" style="display: inline;"> We detail on a continuous colloidal pattern replication by using contact photolithography. Chrome on quartz masks are fabricated using colloidal nanosphere lithography and subsequently used as photolithography stamps. Hexagonal pattern arrangements with different dimensions (980, 620 and 480 nm, using colloidal particles with respective diameters) have been studied. When the mask and the imaged re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.3117v1-abstract-full').style.display = 'inline'; document.getElementById('1402.3117v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1402.3117v1-abstract-full" style="display: none;"> We detail on a continuous colloidal pattern replication by using contact photolithography. Chrome on quartz masks are fabricated using colloidal nanosphere lithography and subsequently used as photolithography stamps. Hexagonal pattern arrangements with different dimensions (980, 620 and 480 nm, using colloidal particles with respective diameters) have been studied. When the mask and the imaged resist layer were in intimate contact, a high fidelity pattern replica was obtained after photolithography exposure and processing. In turn, the presence of an air-gap in between has been found to affect the projected image onto the photoresist layer, strongly dependent on the mask feature size and air-gap height. Pattern replication, inversion and hybridization was achieved for 980 nm-period mask; no hybridization for the 620 nm; and only pattern replication for the 480 nm. These results are interpreted in the framework of a "Talbot-Fabry-Perot" effect. Numerical simulations corroborate with the experimental findings providing insight into the involved processes highlighting the important parameters affecting the exposure pattern. The approach allows complex subwavelength patterning and is relevant for a 3D layer-by-layer printing. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.3117v1-abstract-full').style.display = 'none'; document.getElementById('1402.3117v1-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 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">12 pages, 7 figures, 1 table. Published in Nanotechnology</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nanotechnology 25 (2014) 145303 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1304.3291">arXiv:1304.3291</a> <span> [<a href="https://arxiv.org/pdf/1304.3291">pdf</a>, <a href="https://arxiv.org/ps/1304.3291">ps</a>, <a href="https://arxiv.org/format/1304.3291">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/10.1063/1.4808095">10.1063/1.4808095 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Graphene-coated holey metal films: tunable molecular sensing by surface plasmon resonance </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Reckinger%2C+N">Nicolas Reckinger</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alexandru Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Melinte%2C+S">Sorin Melinte</a>, <a href="/search/cond-mat?searchtype=author&query=Colomer%2C+J">Jean-Francois Colomer</a>, <a href="/search/cond-mat?searchtype=author&query=Sarrazin%2C+M">Michael Sarrazin</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="1304.3291v2-abstract-short" style="display: inline;"> We report on the enhancement of surface plasmon resonances in a holey bidimensional grating of subwavelength size, drilled in a gold thin film coated by a graphene sheet. The enhancement originates from the coupling between charge carriers in graphene and gold surface plasmons. The main plasmon resonance peak is located around 1.5 microns. A lower constraint on the gold-induced doping concentratio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.3291v2-abstract-full').style.display = 'inline'; document.getElementById('1304.3291v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1304.3291v2-abstract-full" style="display: none;"> We report on the enhancement of surface plasmon resonances in a holey bidimensional grating of subwavelength size, drilled in a gold thin film coated by a graphene sheet. The enhancement originates from the coupling between charge carriers in graphene and gold surface plasmons. The main plasmon resonance peak is located around 1.5 microns. A lower constraint on the gold-induced doping concentration of graphene is specified and the interest of this architecture for molecular sensing is also highlighted. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.3291v2-abstract-full').style.display = 'none'; document.getElementById('1304.3291v2-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> 23 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">5 pages, 4 figures, Final version. Published in Applied Physics Letters</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Appl. Phys. Lett. 102, 211108 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.1266">arXiv:1301.1266</a> <span> [<a href="https://arxiv.org/pdf/1301.1266">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey 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/10.1557/opl.2013.913">10.1557/opl.2013.913 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Flexible fiber batteries for applications in smart textiles </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Qu%2C+H">Hang Qu</a>, <a href="/search/cond-mat?searchtype=author&query=Bourgeois%2C+J">Jean-Pierre Bourgeois</a>, <a href="/search/cond-mat?searchtype=author&query=Rolland%2C+J">Julien Rolland</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alexandru Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Gohy%2C+J">Jean-Fran莽ois Gohy</a>, <a href="/search/cond-mat?searchtype=author&query=Skorobogatiy%2C+M">Maksim Skorobogatiy</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="1301.1266v1-abstract-short" style="display: inline;"> Here we discuss two alternative approaches for building flexible batteries for applications in smart textiles. The first approach uses well-studied inorganic electrochemistry (Al-NaOCl galvanic cell) and innovative packaging in order to produce batteries in a slender and flexible fiber form that can be further weaved directly into the textiles. During fabrication process the battery electrodes are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.1266v1-abstract-full').style.display = 'inline'; document.getElementById('1301.1266v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.1266v1-abstract-full" style="display: none;"> Here we discuss two alternative approaches for building flexible batteries for applications in smart textiles. The first approach uses well-studied inorganic electrochemistry (Al-NaOCl galvanic cell) and innovative packaging in order to produce batteries in a slender and flexible fiber form that can be further weaved directly into the textiles. During fabrication process the battery electrodes are co-drawn within a microstructured polymer fiber, which is later filled with liquid electrolyte. The second approach describes Li-ion chemistry within solid polymer electrolytes that are used to build a fully solid and soft rechargeable battery that can be furthermore stitched onto a textile, or integrated as stripes during weaving process. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.1266v1-abstract-full').style.display = 'none'; document.getElementById('1301.1266v1-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> 7 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> MRS Proc. 1489 (2013) mrsf12-1489-a04-01 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.5501">arXiv:1110.5501</a> <span> [<a href="https://arxiv.org/pdf/1110.5501">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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/10.1149/1.3585777">10.1149/1.3585777 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Erbium Silicide Growth in the Presence of Residual Oxygen </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Reckinger%2C+N">Nicolas Reckinger</a>, <a href="/search/cond-mat?searchtype=author&query=Tang%2C+X">Xiaohui Tang</a>, <a href="/search/cond-mat?searchtype=author&query=Godey%2C+S">Sylvie Godey</a>, <a href="/search/cond-mat?searchtype=author&query=Dubois%2C+E">Emmanuel Dubois</a>, <a href="/search/cond-mat?searchtype=author&query=Laszcz%2C+A">Adam Laszcz</a>, <a href="/search/cond-mat?searchtype=author&query=Ratajczak%2C+J">Jacek Ratajczak</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">Alexandru Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Dutu%2C+C+A">Constantin Augustin Dutu</a>, <a href="/search/cond-mat?searchtype=author&query=Raskin%2C+J">Jean-Pierre Raskin</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="1110.5501v1-abstract-short" style="display: inline;"> The chemical changes of Ti/Er/n-Si(100) stacks evaporated in high vacuum and grown ex situ by rapid thermal annealing were scrutinized. The emphasis was laid on the evolution with the annealing temperature of (i) the Er-Si solid-state reaction and (ii) the penetration of oxygen into Ti and its subsequent interaction with Er. For that sake, three categories of specimens were analyzed: as-deposited,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.5501v1-abstract-full').style.display = 'inline'; document.getElementById('1110.5501v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.5501v1-abstract-full" style="display: none;"> The chemical changes of Ti/Er/n-Si(100) stacks evaporated in high vacuum and grown ex situ by rapid thermal annealing were scrutinized. The emphasis was laid on the evolution with the annealing temperature of (i) the Er-Si solid-state reaction and (ii) the penetration of oxygen into Ti and its subsequent interaction with Er. For that sake, three categories of specimens were analyzed: as-deposited, annealed at 300掳C, and annealed at 600掳C. It was found that the presence of residual oxygen into the annealing atmosphere resulted in a substantial oxidation of the Er film surface, irrespective of the annealing temperature. However, the part of the Er film in intimate contact with the Si bulk formed a silicide (amorphous at 300掳C and crystalline at 600掳C) invariably free of oxygen, as testified by x-ray photoelectron spectroscopy depth profiling and Schottky barrier height extraction of 0.3 eV at 600掳C. This proves that, even if Er is highly sensitive to oxygen contamination, the formation of low Schottky barrier Er silicide contacts on n-Si is quite robust. Finally, the production of stripped oxygen-free Er silicide was demonstrated after process optimization. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.5501v1-abstract-full').style.display = 'none'; document.getElementById('1110.5501v1-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 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of The Electrochemical Society, 158, H715-H723, 2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/cond-mat/0609664">arXiv:cond-mat/0609664</a> <span> [<a href="https://arxiv.org/pdf/cond-mat/0609664">pdf</a>, <a href="https://arxiv.org/ps/cond-mat/0609664">ps</a>, <a href="https://arxiv.org/format/cond-mat/0609664">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"> Dephasing Time of Two-Dimensional Holes in GaAs Open Quantum Dots </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Faniel%2C+S">S. Faniel</a>, <a href="/search/cond-mat?searchtype=author&query=Hackens%2C+B">B. Hackens</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">A. Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Moldovan%2C+L">L. Moldovan</a>, <a href="/search/cond-mat?searchtype=author&query=Gustin%2C+C">C. Gustin</a>, <a href="/search/cond-mat?searchtype=author&query=Habib%2C+B">B. Habib</a>, <a href="/search/cond-mat?searchtype=author&query=Melinte%2C+S">S. Melinte</a>, <a href="/search/cond-mat?searchtype=author&query=Shayegan%2C+M">M. Shayegan</a>, <a href="/search/cond-mat?searchtype=author&query=Bayot%2C+V">V. Bayot</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="cond-mat/0609664v1-abstract-short" style="display: inline;"> We report magnetotransport measurements of two-dimensional holes in open quantum dots, patterned either as a single-dot or an array of dots, on a GaAs quantum well. For temperatures $T$ below 500 mK, we observe signatures of coherent transport, namely, conductance fluctuations and weak antilocalization. From these effects, the hole dephasing time $蟿_蠁$ is extracted using the random matrix theo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('cond-mat/0609664v1-abstract-full').style.display = 'inline'; document.getElementById('cond-mat/0609664v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="cond-mat/0609664v1-abstract-full" style="display: none;"> We report magnetotransport measurements of two-dimensional holes in open quantum dots, patterned either as a single-dot or an array of dots, on a GaAs quantum well. For temperatures $T$ below 500 mK, we observe signatures of coherent transport, namely, conductance fluctuations and weak antilocalization. From these effects, the hole dephasing time $蟿_蠁$ is extracted using the random matrix theory. While $蟿_蠁$ shows a $T$-dependence that lies between $T^{-1}$ and $T^{-2}$, similar to that reported for electrons, its value is found to be approximately one order of magnitude smaller. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('cond-mat/0609664v1-abstract-full').style.display = 'none'; document.getElementById('cond-mat/0609664v1-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> 26 September, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2006. </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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/cond-mat/0412705">arXiv:cond-mat/0412705</a> <span> [<a href="https://arxiv.org/pdf/cond-mat/0412705">pdf</a>, <a href="https://arxiv.org/ps/cond-mat/0412705">ps</a>, <a href="https://arxiv.org/format/cond-mat/0412705">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.94.046802">10.1103/PhysRevLett.94.046802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thermopower of Interacting GaAs Bilayer Hole Systems in the Reentrant Insulating Phase near $谓=1$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Faniel%2C+S">S. Faniel</a>, <a href="/search/cond-mat?searchtype=author&query=Tutuc%2C+E">E. Tutuc</a>, <a href="/search/cond-mat?searchtype=author&query=De+Poortere%2C+E+P">E. P. De Poortere</a>, <a href="/search/cond-mat?searchtype=author&query=Gustin%2C+C">C. Gustin</a>, <a href="/search/cond-mat?searchtype=author&query=Vlad%2C+A">A. Vlad</a>, <a href="/search/cond-mat?searchtype=author&query=Melinte%2C+S">S. Melinte</a>, <a href="/search/cond-mat?searchtype=author&query=Shayegan%2C+M">M. Shayegan</a>, <a href="/search/cond-mat?searchtype=author&query=Bayot%2C+V">V. Bayot</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="cond-mat/0412705v1-abstract-short" style="display: inline;"> We report thermopower measurements of interacting GaAs bilayer hole systems. When the carrier densities in the two layers are equal, these systems exhibit a reentrant insulating phase near the quantum Hall state at total filling factor $谓=1$. Our data show that as the temperature is decreased, the thermopower diverges in the insulating phase. This behavior indicates the opening of an energy gap… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('cond-mat/0412705v1-abstract-full').style.display = 'inline'; document.getElementById('cond-mat/0412705v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="cond-mat/0412705v1-abstract-full" style="display: none;"> We report thermopower measurements of interacting GaAs bilayer hole systems. When the carrier densities in the two layers are equal, these systems exhibit a reentrant insulating phase near the quantum Hall state at total filling factor $谓=1$. Our data show that as the temperature is decreased, the thermopower diverges in the insulating phase. This behavior indicates the opening of an energy gap at low temperature, consistent with the formation of a pinned Wigner solid. We extract an energy gap and a Wigner solid melting phase diagram. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('cond-mat/0412705v1-abstract-full').style.display = 'none'; document.getElementById('cond-mat/0412705v1-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 December, 2004; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2004. </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">to be published in Phys. Rev. Lett</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 94, 046802 (2005) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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