Journal Article

FZJ-2024-05733

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png In-plane magnetic field driven conductance modulations in topological insulator kinks

Behner, G. (Corresponding author)FZJ* ; Moors, K. (Corresponding author)FZJ* ; Zhang, Y. ; Schleenvoigt, M.FZJ* ; Rupp, A.FZJ* ; Zimmermann, E. ; Jalil, A. R.FZJ* ; Schüffelgen, P.FZJ* ; Lüth, H.FZJ* ; Grützmacher, D.FZJ* ; Schäpers, T. (Corresponding author)FZJ*

2024
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.109.155429  doi:10.34734/FZJ-2024-05733

Abstract: We present low-temperature magnetoconductance measurements on Bi1.5⁢Sb0.5⁢Te1.8⁢Se1.2 kinks with ribbon-shaped legs. The conductance displays a clear dependence on the in-plane magnetic field orientation. The conductance modulation is consistent with orbital effect-driven trapping of the topological surface states on different side facets of the legs of the kink, which affects their transmission across the kink. This magnetic field driven trapping and conductance pattern can be explained with a semiclassical picture and is supported by quantum transport simulations. The interpretation is corroborated by varying the angle of the kink and analyzing the temperature dependence of the observed magnetoconductance pattern, indicating the importance of phase coherence along the cross-section perimeter of the kink legs.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 5222 - Exploratory Qubits (POF4-522) (POF4-522)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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