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41 papers · 2 filters
Exciton Condensate Modulation in Electron-Hole Bilayers: A Real-Space Visualization
Jian-Xin Zhu, A. R. Bishop
We study the texture of the exciton condensate at low temperatures in an independently gated electron-hole bilayer system. A model Hamiltonian is solved in real space within a mean…
Band Narrowing and Mott Localization in Iron Oxychalcogenides La2O2Fe2O(Se,S)2
Jian-Xin Zhu, Rong Yu, Hangdong Wang +7
Bad metal properties have motivated a description of the parent iron pnictides as correlated metals on the verge of Mott localization. What has been unclear is whether interactions…
Crystal field effects and quadrupole fluctuations in CeAuSb detected by Sb NQR
S. -H. Baek, H. Sakai, H. Lee +3
We report Sb NQR studies on single crystals of the narrow gap semiconductor Ce3Au3Sb4. The temperature dependence of the nuclear quadrupole frequency (), as well a…
U nuclear relaxation rates in an itinerant antiferromagnet USb
S. -H. Baek, N. J. Curro, H. Sakai +3
U nuclear spin-lattice () and spin-spin () relaxation rates in the itinerant antiferromagnet USb are reported as a function of temperature in zero f…
Real-time dynamics of particle-hole excitations in Mott insulator-metal junctions
Luis G. G. V. Dias da Silva, Khaled A. Al-Hassanieh, Adrian E. Feiguin +2
Charge excitations in Mott insulators (MIs) are distinct from their band-insulator counterparts and they can provide a mechanism for energy harvesting in solar cells based on stron…
Orbitally controlled Kondo effect of Co ad-atoms on graphene
T. O. Wehling, A. V. Balatsky, M. I. Katsnelson +2
Based on ab-initio calculations we identify possible scenarios for the Kondo effect due to Co ad-atoms on graphene. General symmetry arguments show that for magnetic atoms in high-…