Landau Level Broadening in the Three-Dimensional Topological Insulator Sb2Te3 | Sciact - CRIS-system of Boreskov Institute of Catalysis

Landau Level Broadening in the Three-Dimensional Topological Insulator Sb2Te3 Full article

Journal

Physica Status Solidi - Rapid Research Letters
ISSN: 1862-6254 , E-ISSN: 1862-6270

Output data

Year: 2018, Volume: 12, Number: 11, Article number : 1800112, Pages count : 5 DOI: 10.1002/pssr.201800112

Tags

coherence, Landau level, scanning tunneling microscopy, topological insulators

Authors

Storz Oliver ¹ , Sessi Paolo ¹ , Wilfert Stefan ¹ , Dirker Chris ¹ , Bathon Thomas ¹ , Kokh Konstantin ^2,3 , Tereshchenko Oleg ^3,4 , Bode Matthias ^1,5

Affiliations

1	Physikalisches Institut, Experimentelle Physik II, Universität Würzburg, 97074 Würzburg, Germany
2	V. S. Sobolev Institute of Geology and Mineralogy Siberian Branch Russian Academy of Sciences, 630090 Novosibirsk, Russia
3	Novosibirsk State University, 630090 Novosibirsk, Russia
4	A. V. Rzanov Institute of Semiconductor Physics Siberian Branch Russian Academy of Sciences, 630090 Novosibirsk, Russia
5	Wilhelm Conrad Röntgen-Center for Complex Material Systems (RCCM), Universität Würzburg, 97074 Würzburg, Germany

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.

Storz O. , Sessi P. , Wilfert S. , Dirker C. , Bathon T. , Kokh K. , Tereshchenko O. , Bode M.
Landau Level Broadening in the Three-Dimensional Topological Insulator Sb2Te3
Physica Status Solidi - Rapid Research Letters. 2018. V.12. N11. 1800112 :1-5. DOI: 10.1002/pssr.201800112 WOS Scopus ANCAN OpenAlex

Submitted:	Mar 10, 2018
Accepted:	Mar 28, 2018
Published online:	Apr 18, 2018
Published print:	Nov 1, 2018

Web of science:	WOS:000450130300005
Scopus:	2-s2.0-85045848495
Chemical Abstracts:	2018:777385
Chemical Abstracts (print):	175:464238
OpenAlex:	W2800696400

DB	Citing
Scopus	2
OpenAlex	2
Web of science	2