Результаты исследований: Научные публикации в периодических изданиях › письмо/краткое сообщение › Рецензирование
Landau Level Broadening in the Three-Dimensional Topological Insulator Sb2Te3. / Storz, Oliver; Sessi, Paolo; Wilfert, Stefan и др.
в: Physica Status Solidi - Rapid Research Letters, Том 12, № 11, 1800112, 01.11.2018.Результаты исследований: Научные публикации в периодических изданиях › письмо/краткое сообщение › Рецензирование
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TY - JOUR
T1 - Landau Level Broadening in the Three-Dimensional Topological Insulator Sb2Te3
AU - Storz, Oliver
AU - Sessi, Paolo
AU - Wilfert, Stefan
AU - Dirker, Chris
AU - Bathon, Thomas
AU - Kokh, Konstantin
AU - Tereshchenko, Oleg
AU - Bode, Matthias
N1 - Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/11/1
Y1 - 2018/11/1
N2 - Topological insulators (TIs) possess an insulating bulk and spin-momentum-locked Dirac-like surface states which are topologically protected from backscattering. This connection between charge and spin currents makes TIs highly attractive for spintronics and quantum computing applications where spin-encoded information needs to be coherently transmitted and processed with high-fidelity. However, the physical limits of quantum coherence in TIs have not yet been fundamentally understood. Here we demonstrate by scanning tunneling spectroscopy (STS) measurements at high magnetic fields that the broadening of Landau level (LL) states in Sb2Te3 exhibit a maximum width at the zeroth LL and monotonously decrease away from the Dirac energy. The weak magnetic field dependence verifies that the spin–orbit-induced spin texture of topological states effectively protects them from scattering even at the highest achievable magnetic fields.
AB - Topological insulators (TIs) possess an insulating bulk and spin-momentum-locked Dirac-like surface states which are topologically protected from backscattering. This connection between charge and spin currents makes TIs highly attractive for spintronics and quantum computing applications where spin-encoded information needs to be coherently transmitted and processed with high-fidelity. However, the physical limits of quantum coherence in TIs have not yet been fundamentally understood. Here we demonstrate by scanning tunneling spectroscopy (STS) measurements at high magnetic fields that the broadening of Landau level (LL) states in Sb2Te3 exhibit a maximum width at the zeroth LL and monotonously decrease away from the Dirac energy. The weak magnetic field dependence verifies that the spin–orbit-induced spin texture of topological states effectively protects them from scattering even at the highest achievable magnetic fields.
KW - coherence
KW - Landau level
KW - scanning tunneling microscopy
KW - topological insulators
KW - STATES
KW - TUNNELING SPECTROSCOPY
KW - GRAPHENE
KW - P-N-JUNCTION
UR - http://www.scopus.com/inward/record.url?scp=85045848495&partnerID=8YFLogxK
U2 - 10.1002/pssr.201800112
DO - 10.1002/pssr.201800112
M3 - Letter
AN - SCOPUS:85045848495
VL - 12
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
SN - 1862-6254
IS - 11
M1 - 1800112
ER -
ID: 17303212