TY  - JOUR
AU  - Leis, Arthur
AU  - Schleenvoigt, Michael
AU  - Jalil, Abdur Rehman
AU  - Cherepanov, Vasily
AU  - Mussler, Gregor
AU  - Grützmacher, Detlev
AU  - Tautz, F. Stefan
AU  - Voigtländer, Bert
TI  - Room temperature in-situ measurement of the spin voltage of a BiSbTe3 thin film
JO  - Scientific reports
VL  - 10
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - FZJ-2020-00821
SP  - 2816
PY  - 2020
AB  - One of the hallmarks of topological insulators (TIs), the intrinsic spin polarisation in the topologically protected surface states, is investigated at room temperature in-situ by means of four-probe scanning tunnelling microscopy (STM) for a BiSbTe3 thin film. To achieve the required precision of tip positions for measuring a spin signal, a precise positioning method employing STM scans of the local topography with each individual tip is demonstrated. From the transport measurements, the spin polarisation in the topological surface states (TSS) is estimated as p ~ 0.3 – 0.6, which is close to the theoretical limit.
LB  - PUB:(DE-HGF)16
C6  - pmid:32071388
UR  - <Go to ISI:>//WOS:000560398000021
DO  - DOI:10.1038/s41598-020-59679-9
UR  - https://juser.fz-juelich.de/record/873553
ER  -