TY  - JOUR
AU  - Leis, Arthur
AU  - Schleenvoigt, Michael
AU  - Cherepanov, Vasily
AU  - Lüpke, Felix
AU  - Schüffelgen, Peter
AU  - Mussler, Gregor
AU  - Grützmacher, Detlev
AU  - Voigtländer, Bert
AU  - Tautz, F. Stefan
TI  - Front Cover: Lifting the Spin‐Momentum Locking in Ultra‐Thin Topological Insulator Films (Adv. Quantum Technol. 11/2021)
JO  - Advanced quantum technologies
VL  - 4
IS  - 11
SN  - 2511-9044
CY  - Weinheim
PB  - Wiley-VCH Verlag
M1  - FZJ-2021-04418
SP  - 2170111 -
PY  - 2021
AB  - In article number 2100083, Arthur Leis, Bert Voigtländer and co-workers demonstrate nanoscale four-probe measurements on atomically thin topological insulator films. For this purpose, four individual scanning tunneling microscope tips are directly contacting individual terraces on the sample surface to quantify the thickness-dependent film conductivity. This enables the authors to detect a breakdown of spin-momentum locking in the topological surface state as a function of the film thickness. In the few-layer limit, this effect can realize helical edge modes along step edges with potential applications in spintronics and quantum computing.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1002/qute.202170111
UR  - https://juser.fz-juelich.de/record/902623
ER  -