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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/2405.15229">arXiv:2405.15229</a> <span> [<a href="https://arxiv.org/pdf/2405.15229">pdf</a>, <a href="https://arxiv.org/format/2405.15229">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"> Multi-Orbital Interactions and Spin Polarization in Single Rare-Earth Adatoms </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Kelai%2C+M">Massine Kelai</a>, <a href="/search/cond-mat?searchtype=author&query=Reale%2C+S">Stefano Reale</a>, <a href="/search/cond-mat?searchtype=author&query=Robles%2C+R">Roberto Robles</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J">Jaehyun Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Jyoti%2C+D">Divya Jyoti</a>, <a href="/search/cond-mat?searchtype=author&query=Ohresser%2C+P">Philippe Ohresser</a>, <a href="/search/cond-mat?searchtype=author&query=Otero%2C+E">Edwige Otero</a>, <a href="/search/cond-mat?searchtype=author&query=Choueikani%2C+F">Fadi Choueikani</a>, <a href="/search/cond-mat?searchtype=author&query=Scheurer%2C+F">Fabrice Scheurer</a>, <a href="/search/cond-mat?searchtype=author&query=Lorente%2C+N">Nicol谩s Lorente</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+D">Deung-Jang Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Singha%2C+A">Aparajita Singha</a>, <a href="/search/cond-mat?searchtype=author&query=Donati%2C+F">Fabio Donati</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="2405.15229v1-abstract-short" style="display: inline;"> Surface-adsorbed rare-earth nanostructures are ideal platforms to investigate the interplay between intra-atomic interactions and multi-orbital spin configurations. However, addressing these properties has posed severe experimental and theoretical challenges. Here, we use the orbital selectivity offered by X-ray absorption spectroscopy to quantify the Coulomb integrals of Nd atoms on conductive su… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.15229v1-abstract-full').style.display = 'inline'; document.getElementById('2405.15229v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.15229v1-abstract-full" style="display: none;"> Surface-adsorbed rare-earth nanostructures are ideal platforms to investigate the interplay between intra-atomic interactions and multi-orbital spin configurations. However, addressing these properties has posed severe experimental and theoretical challenges. Here, we use the orbital selectivity offered by X-ray absorption spectroscopy to quantify the Coulomb integrals of Nd atoms on conductive surfaces, as well as the variation of individual orbital occupation upon cluster nucleation. Using X-ray magnetic circular dichroism we identify magnetic moments of the order of \MK{few tens of}~$渭_{\rm{B}}$ at the $5d$ orbitals and their magnetic coupling with the $4f$ spins. Our results validate orbital-resolved X-ray spectroscopy as a reliable method for quantifying complex multi-orbital interactions in surface-adsorbed lanthanides. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.15229v1-abstract-full').style.display = 'none'; document.getElementById('2405.15229v1-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 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2105.04199">arXiv:2105.04199</a> <span> [<a href="https://arxiv.org/pdf/2105.04199">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/10.1039/d1qi00085c">10.1039/d1qi00085c <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Robust magnetic anisotropy of a monolayer of hexacoordinate Fe( ii ) complexes assembled on Cu(111) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Kelai%2C+M">Massine Kelai</a>, <a href="/search/cond-mat?searchtype=author&query=Cahier%2C+B">Benjamin Cahier</a>, <a href="/search/cond-mat?searchtype=author&query=Atanasov%2C+M">Mihail Atanasov</a>, <a href="/search/cond-mat?searchtype=author&query=Neese%2C+F">Frank Neese</a>, <a href="/search/cond-mat?searchtype=author&query=Tong%2C+Y">Yongfeng Tong</a>, <a href="/search/cond-mat?searchtype=author&query=Zhang%2C+L">Luqiong Zhang</a>, <a href="/search/cond-mat?searchtype=author&query=Bellec%2C+A">Amandine Bellec</a>, <a href="/search/cond-mat?searchtype=author&query=Iasco%2C+O">Olga Iasco</a>, <a href="/search/cond-mat?searchtype=author&query=Rivi%C3%A8re%2C+E">Eric Rivi猫re</a>, <a href="/search/cond-mat?searchtype=author&query=Guillot%2C+R">R茅gis Guillot</a>, <a href="/search/cond-mat?searchtype=author&query=Chacon%2C+C">Cyril Chacon</a>, <a href="/search/cond-mat?searchtype=author&query=Girard%2C+Y">Yann Girard</a>, <a href="/search/cond-mat?searchtype=author&query=Lagoute%2C+J">J茅r么me Lagoute</a>, <a href="/search/cond-mat?searchtype=author&query=Rousset%2C+S">Sylvie Rousset</a>, <a href="/search/cond-mat?searchtype=author&query=Repain%2C+V">Vincent Repain</a>, <a href="/search/cond-mat?searchtype=author&query=Otero%2C+E">Edwige Otero</a>, <a href="/search/cond-mat?searchtype=author&query=Arrio%2C+M">Marie-Anne Arrio</a>, <a href="/search/cond-mat?searchtype=author&query=Sainctavit%2C+P">Philippe Sainctavit</a>, <a href="/search/cond-mat?searchtype=author&query=Barra%2C+A">Anne-Laure Barra</a>, <a href="/search/cond-mat?searchtype=author&query=Boillot%2C+M">Marie-Laure Boillot</a>, <a href="/search/cond-mat?searchtype=author&query=Mallah%2C+T">Talal Mallah</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="2105.04199v1-abstract-short" style="display: inline;"> The tris pyrazolyl borate ligand imposes a rigid scaffold around Fe( ii ) ensuring a robust magnetic anisotropy when the molecules assembled as monolayers suffer from the dissymmetric environment of the substrate/vacuum interface. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2105.04199v1-abstract-full" style="display: none;"> The tris pyrazolyl borate ligand imposes a rigid scaffold around Fe( ii ) ensuring a robust magnetic anisotropy when the molecules assembled as monolayers suffer from the dissymmetric environment of the substrate/vacuum interface. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.04199v1-abstract-full').style.display = 'none'; document.getElementById('2105.04199v1-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 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Inorganic Chemistry Frontiers, Royal Society of Chemistry, 2021, 8 (9), pp.2395-2404 </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/1708.08918">arXiv:1708.08918</a> <span> [<a href="https://arxiv.org/pdf/1708.08918">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/PhysRevB.96.134303">10.1103/PhysRevB.96.134303 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Element-resolved ultrafast demagnetization rates in ferrimagnetic CoDy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Ferte%2C+T">T. Ferte</a>, <a href="/search/cond-mat?searchtype=author&query=Bergeard%2C+N">N. Bergeard</a>, <a href="/search/cond-mat?searchtype=author&query=Guyader%2C+L+L">L. Le Guyader</a>, <a href="/search/cond-mat?searchtype=author&query=Hehn%2C+M">M. Hehn</a>, <a href="/search/cond-mat?searchtype=author&query=Malinowski%2C+G">G. Malinowski</a>, <a href="/search/cond-mat?searchtype=author&query=Terrier%2C+E">E. Terrier</a>, <a href="/search/cond-mat?searchtype=author&query=Otero%2C+E">E. Otero</a>, <a href="/search/cond-mat?searchtype=author&query=Holldack%2C+K">K. Holldack</a>, <a href="/search/cond-mat?searchtype=author&query=Pontius%2C+N">N. Pontius</a>, <a href="/search/cond-mat?searchtype=author&query=Boeglin%2C+C">C. Boeglin</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="1708.08918v2-abstract-short" style="display: inline;"> Femtosecond laser induced ultrafast magnetization dynamics have been studied in multisublattice CoxDy1-x alloys. By performing element and time-resolved X-ray spectroscopy, we distinguish the ultrafast quenching of Co3d and Dy4f magnetic order when the initial temperatures are below (T=150K) or above (T=270K) the temperature of magnetic compensation (Tcomp). In accordance with former element-resol… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.08918v2-abstract-full').style.display = 'inline'; document.getElementById('1708.08918v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1708.08918v2-abstract-full" style="display: none;"> Femtosecond laser induced ultrafast magnetization dynamics have been studied in multisublattice CoxDy1-x alloys. By performing element and time-resolved X-ray spectroscopy, we distinguish the ultrafast quenching of Co3d and Dy4f magnetic order when the initial temperatures are below (T=150K) or above (T=270K) the temperature of magnetic compensation (Tcomp). In accordance with former element-resolved investigations and theoretical calculations, we observe different dynamics for Co3d and Dy4f spins. In addition we observe that, for a given laser fluence, the demagnetization amplitudes and demagnetization times are not affected by the existence of a temperature of magnetic compensation. However, our experiment reveals a twofold increase of the ultrafast demagnetization rates for the Dy sublattice at low temperature. In parallel, we measure a constant demagnetization rate of the Co3d sublattice above and below Tcomp. This intriguing difference between the Dy4f and Co3d sublattices calls for further theoretical and experimental investigations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.08918v2-abstract-full').style.display = 'none'; document.getElementById('1708.08918v2-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 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">6 Figure, 2 Tables</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, 134303 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.04144">arXiv:1602.04144</a> <span> [<a href="https://arxiv.org/pdf/1602.04144">pdf</a>, <a href="https://arxiv.org/format/1602.04144">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/10.1209/0295-5075/113/67001">10.1209/0295-5075/113/67001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Very large domain wall velocities in Pt/Co/Gd trilayers with Dzyaloshinskii-Moriya interaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Pham%2C+T+H">Thai Ha Pham</a>, <a href="/search/cond-mat?searchtype=author&query=Vogel%2C+J">J. Vogel</a>, <a href="/search/cond-mat?searchtype=author&query=Sampaio%2C+J">J. Sampaio</a>, <a href="/search/cond-mat?searchtype=author&query=Va%C5%88atka%2C+M">M. Va艌atka</a>, <a href="/search/cond-mat?searchtype=author&query=Rojas%2C+J+-">J. -C. Rojas</a>, <a href="/search/cond-mat?searchtype=author&query=Bonfim%2C+M">M. Bonfim</a>, <a href="/search/cond-mat?searchtype=author&query=Chaves%2C+D+S">D. S. Chaves</a>, <a href="/search/cond-mat?searchtype=author&query=Choueikani%2C+F">F. Choueikani</a>, <a href="/search/cond-mat?searchtype=author&query=Ohresser%2C+P">P. Ohresser</a>, <a href="/search/cond-mat?searchtype=author&query=Otero%2C+E">E. Otero</a>, <a href="/search/cond-mat?searchtype=author&query=Thiaville%2C+A">A. Thiaville</a>, <a href="/search/cond-mat?searchtype=author&query=Pizzini%2C+S">S. Pizzini</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="1602.04144v1-abstract-short" style="display: inline;"> We carried out measurements of domain wall (DW) velocities driven by magnetic field pulses in symmetric Pt/Co/Pt and asymmetric Pt/Co/AlOx, Pt/Co/GdOx and Pt/Co/Gd trilayers with ultrathin Co layers and perpendicular magnetic anisotropy. In agreement with theoretical models, the maximum observed velocity is much larger in the asymmetric samples, where the interfacial Dzyaloshinskii-Moriya interact… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.04144v1-abstract-full').style.display = 'inline'; document.getElementById('1602.04144v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.04144v1-abstract-full" style="display: none;"> We carried out measurements of domain wall (DW) velocities driven by magnetic field pulses in symmetric Pt/Co/Pt and asymmetric Pt/Co/AlOx, Pt/Co/GdOx and Pt/Co/Gd trilayers with ultrathin Co layers and perpendicular magnetic anisotropy. In agreement with theoretical models, the maximum observed velocity is much larger in the asymmetric samples, where the interfacial Dzyaloshinskii-Moriya interaction (DMI) stabilises chiral N茅el walls, than in the symmetric stack. In addition, in Pt/Co/Gd very large DW speeds (up to 600 m/s) are obtained, 2.5 times larger than in samples with oxidised Gd. Magnetic measurements reveal that this may be explained by the anti-parallel coupling between the magnetic moments of Gd and Co at the Gd/Co interface, leading to a decrease of the total magnetisation. In quantitative agreement with analytical models, in all samples the maximum observed DW speed scales as D=Ms, where D is the strength of the DMI and Ms the spontaneous magnetisation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.04144v1-abstract-full').style.display = 'none'; document.getElementById('1602.04144v1-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> 12 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> EPL (Europhysics Letters) 113, 67001 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.2775">arXiv:1311.2775</a> <span> [<a href="https://arxiv.org/pdf/1311.2775">pdf</a>, <a href="https://arxiv.org/format/1311.2775">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> <span class="tag is-small is-grey 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/jp502209q">10.1021/jp502209q <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Magnetic Coupling and Single-Ion Anisotropy in Surface-Supported Mn-based Metal-Organic Networks </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Giovanelli%2C+L">L. Giovanelli</a>, <a href="/search/cond-mat?searchtype=author&query=Savoyant%2C+A">A. Savoyant</a>, <a href="/search/cond-mat?searchtype=author&query=Abel%2C+M">M. Abel</a>, <a href="/search/cond-mat?searchtype=author&query=Maccherozzi%2C+F">F. Maccherozzi</a>, <a href="/search/cond-mat?searchtype=author&query=Ksari%2C+Y">Y. Ksari</a>, <a href="/search/cond-mat?searchtype=author&query=Koudia%2C+M">M. Koudia</a>, <a href="/search/cond-mat?searchtype=author&query=Hayn%2C+R">R. Hayn</a>, <a href="/search/cond-mat?searchtype=author&query=Choueikani%2C+F">F. Choueikani</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=Themlin%2C+J+-">J. -M. Themlin</a>, <a href="/search/cond-mat?searchtype=author&query=Dhesi%2C+S+S">S. S. Dhesi</a>, <a href="/search/cond-mat?searchtype=author&query=Clair%2C+S">S. Clair</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="1311.2775v3-abstract-short" style="display: inline;"> The electronic and magnetic properties of Mn coordinated to 1,2,4,5-tetracyanobenzene (TCNB) in the Mn-TCNB 2D metal-ligand networks have been investigated by combining scanning tunneling microscopy and X-ray magnetic circular dichroism (XMCD) performed at low temperature (3 K). When formed on Au(111) and Ag(111) substrates the Mn-TCNB networks display similar geometric structures. Magnetization c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.2775v3-abstract-full').style.display = 'inline'; document.getElementById('1311.2775v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.2775v3-abstract-full" style="display: none;"> The electronic and magnetic properties of Mn coordinated to 1,2,4,5-tetracyanobenzene (TCNB) in the Mn-TCNB 2D metal-ligand networks have been investigated by combining scanning tunneling microscopy and X-ray magnetic circular dichroism (XMCD) performed at low temperature (3 K). When formed on Au(111) and Ag(111) substrates the Mn-TCNB networks display similar geometric structures. Magnetization curves reveal ferromagnetic (FM) coupling of the Mn sites with similar single-ion anisotropy energies, but different coupling constants. Low-temperature XMCD spectra show that the local environment of the Mn centers differs appreciably for the two substrates. Multiplet structure calculations were used to derive the corresponding ligand field parameters confirming an in-plane uniaxial anisotropy. The observed interatomic coupling is discussed in terms of superexchange as well as substrate-mediated magnetic interactions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.2775v3-abstract-full').style.display = 'none'; document.getElementById('1311.2775v3-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">J. Phys. Chem. C 2014</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.4885">arXiv:1301.4885</a> <span> [<a href="https://arxiv.org/pdf/1301.4885">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/PhysRevB.87.214412">10.1103/PhysRevB.87.214412 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Role of critical spin fluctuations in ultrafast demagnetization of transition-metal rare-earth alloys </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Lopez-Flores%2C+V">V. Lopez-Flores</a>, <a href="/search/cond-mat?searchtype=author&query=Bergeard%2C+N">N. Bergeard</a>, <a href="/search/cond-mat?searchtype=author&query=Halte%2C+V">V. Halte</a>, <a href="/search/cond-mat?searchtype=author&query=Stamm%2C+C">C Stamm</a>, <a href="/search/cond-mat?searchtype=author&query=Pontius%2C+N">N. Pontius</a>, <a href="/search/cond-mat?searchtype=author&query=Hehn%2C+M">M. Hehn</a>, <a href="/search/cond-mat?searchtype=author&query=Otero%2C+E">E. Otero</a>, <a href="/search/cond-mat?searchtype=author&query=Beaurepaire%2C+E">E. Beaurepaire</a>, <a href="/search/cond-mat?searchtype=author&query=Boeglin%2C+C">C. Boeglin</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="1301.4885v3-abstract-short" style="display: inline;"> Ultrafast magnetization dynamics induced by femtosecond laser pulses have been measured in ferrimagnetic Co0.8Gd0.2, Co.74Tb.26 and Co.86Tb.14 alloys. Using element sensitivity of X-ray magnetic circular dichroism at the Co L3, Tb M5 and Gd M5 edges we evidence that the demagnetization dynamics is element dependent. We show that a thermalization time as fast as 280 fs is observed for the rare-eart… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.4885v3-abstract-full').style.display = 'inline'; document.getElementById('1301.4885v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.4885v3-abstract-full" style="display: none;"> Ultrafast magnetization dynamics induced by femtosecond laser pulses have been measured in ferrimagnetic Co0.8Gd0.2, Co.74Tb.26 and Co.86Tb.14 alloys. Using element sensitivity of X-ray magnetic circular dichroism at the Co L3, Tb M5 and Gd M5 edges we evidence that the demagnetization dynamics is element dependent. We show that a thermalization time as fast as 280 fs is observed for the rare-earth in the alloy, when the laser excited state temperature is below the compensation temperature. It is limited to 500 fs when the laser excited state temperature is below the Curie temperature (Tc). We propose critical spin fluctuations in the vicinity of TC as the mechanism which reduces the demagnetization rates of the 4f electrons in transition-metal rare-earth alloys whereas at any different temperature the limited demagnetization rates could be avoided. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.4885v3-abstract-full').style.display = 'none'; document.getElementById('1301.4885v3-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 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 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">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 4 figures</span> </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 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