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Electrons on the surface of Bi2Se3 form a topologically-ordered two dimensional gas with a non-trivial Berry's phase
Y. Xia, L. Wray, D. Qian +8
The interface between a superconductor and a topological insulator has been proposed to harbor novel quasiparticles that realize physical schemes for fault-tolerant quantum computa…
Extreme Sensitivity of Superconductivity to Stoichiometry in FeSe (Fe1+dSe)
T. M. McQueen, Q. Huang, V. Ksenofontov +10
The recently discovered iron arsenide superconductors, which display superconducting transition temperatures as high as 55 K, appear to share a number of general features with high…
Magnetothermodynamics of the Ising Antiferromagnet Dy2Ge2O7
X. Ke, M. L. Dahlberg, E. Morosan +3
We report systematic low temperature measurements of the DC magnetization, AC susceptibility, and heat capacity of dysprosium pyrogermanate (Dy2Ge2O7) single crystal and powder sam…
Tuning the Charge Density Wave and Superconductivity in CuxTaS2
K. E. Wagner, E. Morosan, Y. S. Hor +8
We report the characterization of layered, 2H-type CuxTaS2, for x between 0 and 0.12. The charge density wave (CDW), at 70 K for TaS2, is destabilized with Cu doping. The sub-1K su…
Superconductivity at 2.2K in La3Ni4P4O2
T. Klimczuk, T. M. McQueen, A. J. Williams +6
We report the observation of superconductivity in La3Ni4P4O2 at 2.2 K. The layer stacking in this compound results in an asymmetric distribution of charge reservoir layers around t…
Structural Disorder, Octahedral Coordination, and 2-Dimensional Ferromagnetism in Anhydrous Alums
D. V. West, Q. Huang, H. W. Zandbergen +2
The crystal structures of the triangular lattice, layered anhydrous alums KCr(SO4)2, RbCr(SO4)2 and KAl(SO4)2 are characterized by X-ray and neutron powder diffraction at temperatu…