نتایج جستجو برای: bi2te3
تعداد نتایج: 684 فیلتر نتایج به سال:
B. C. Chapler,1 K. W. Post,1 A. R. Richardella,2 J. S. Lee,2 J. Tao,3 N. Samarth,2 and D. N. Basov1 1Physics Department, University of California-San Diego, La Jolla, California 92093, USA 2Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA 3Brookhaven National Laboratory, Upton, New York 11973, USA (Received 21 January 2014; revised manuscript re...
A topological surface state that is protected physically under the Bi2Te3-like five-layer block has been revealed on the Pb-based topological insulator (TI) PbBi4Te7 by bulk sensitive angle-resolved photoelectron spectroscopy (ARPES). Furthermore, conservation of the spin polarization of the hidden topological surface states is directly confirmed by bulk-sensitive spin ARPES observation. This f...
Submitted for the MAR11 Meeting of The American Physical Society Spin polarization and transport of surface states in the topological insulators Bi2Se3 and Bi2Te3 from first principles1 OLEG YAZYEV, JOEL MOORE, STEVEN LOUIE, UC Berkeley and LBNL — We investigate the band dispersion and the spin texture of topologically protected surface states in the reference bulk topological insulators Bi2Se3...
Topological insulators are new states of quantum matter in which surface states residing in the bulk insulating gap of such systems are protected by time-reversal symmetry. The study of such states was originally inspired by the robustness to scattering of conducting edge states in quantum Hall systems. Recently, such analogies have resulted in the discovery of topologically protected states in...
Bismuth telluride (Bi2Te3) and related compounds have recently attracted strong interest, owing to the discovery of the topological insulator properties in many members of this family of materials. The few-quintuple films of these materials are particularly interesting from the physics point of view. We report results of the micro-Raman spectroscopy study of the “graphene-like” exfoliated few-q...
Polycrystalline Bi2Te3 nanowires are electrochemically grown in ion track-etched polycarbonate membranes. Potentiostatic growth is demonstrated in templates of various thicknesses ranging from 10 to 100 μm. The smallest observed nanowire diameters are 20 nm in thin membranes and approx. 140 180 nm in thicker membranes. The influence of the various deposition parameters on the nanowire growth ra...
We present one-shot GW calculations of the bulk electronic structure of the topological insulators Bi2Se3 and Bi2Te3 within the all-electron full-potential linearized augmented-plane-wave formalism. We compare three different ways of treating the spin-orbit interaction in calculating the quasiparticle energies: (i) The spin-orbit coupling (SOC) is already incorporated in the noninteracting syst...
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