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Discovery of several large families of Topological Insulator classes with backscattering-suppressed spin-polarized single-Dirac-cone on the surface
Su-Yang Xu, L. A. Wray, Y. Xia +9
Three dimensional (3D) topological insulators are novel states of quantum matter that feature spin-momentum locked helical Dirac fermions on their surfaces and hold promise to open…
Transmission of topological surface states through surface barriers
Jungpil Seo, Pedram Roushan, Haim Beidenkopf +3
Topological surface states are a class of novel electronic states that are of potential interest in quantum computing or spintronic applications. Unlike conventional two-dimensiona…
Superconductivity at 2.3 K in the misfit compound (PbSe)1.16(TiSe2)2
N. Giang, Q. Xu, Y. S. Hor +4
The structural misfit compound (PbSe)1.16(TiSe2)2 is reported. It is a superconductor with a Tc of 2.3 K. (PbSe)1.16(TiSe2)2 derives from a parent compound, TiSe2, which shows a ch…
Superconductivity and non-metallicity induced by doping the topological insulators Bi2Se3 and Bi2Te3
Y. S. Hor, J. G. Checkelsky, D. Qu +2
We show that by Ca-doping the Bi2Se3 topological insulator, the Fermi level can be fine tuned to fall inside the band gap and therefore suppress the bulk conductivity. Non-metallic…
Bulk Band Gap and Surface State Conduction Observed in Voltage-Tuned Crystals of the Topological Insulator BiSe
J. G. Checkelsky, Y. S. Hor, R. J. Cava +1
We report a transport study of exfoliated few monolayer crystals of topological insulator BiSe in an electric field effect (EFE) geometry. By doping the bulk crystals with…
First observation of Spin-Momentum Helical Locking in Bi2Se3 and Bi2Te3, demonstration of Topological-Order at 300K and a realization of topological-transport-regime
D. Hsieh, Y. Xia, D. Qian +14
Both the theoretical and experimental discovery of single-Dirac-cone topological-insulator-class was reported at arXiv:0812.2078 (2008) [Y. Xia et.al., Nature Physics 5, 398-402 (2…