Article (Scientific journals)
Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures
Rod, Alexia; Dolcetto, Giacomo; Rachel, Stephan et al.
2016In Physical Review. B, 94, p. 035428
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The original publication is available at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.035428 ©2016 American Physical Society


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Abstract :
[en] We investigate electron transport through an antidot embedded in a narrow strip of two-dimensional topological insulator. We focus on the most generic and experimentally relevant case with broken axial spin symmetry. Spin-non-conservation allows additional scattering processes which change the transport properties profoundly. We start from an analytical model for noninteracting transport, which we also compare with a numerical tight-binding simulation. We then extend this model by including Coulomb repulsion on the antidot, and we study the transport in the Coulomb-blockade limit. We investigate sequential tunneling and cotunneling regimes, and we find that the current-voltage characteristic allows a spectroscopic measurement of the edge-state spin textures.
Disciplines :
Physics
Author, co-author :
Rod, Alexia ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit ; Technische Universität Dresden - TUD > Institute for Theoretical Physics
Dolcetto, Giacomo ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Rachel, Stephan;  Technische Universität Dresden - TUD > Institute for Theoretical Physics
Schmidt, Thomas ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
External co-authors :
yes
Language :
English
Title :
Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures
Publication date :
18 July 2016
Journal title :
Physical Review. B
ISSN :
2469-9969
Publisher :
American Physical Society
Volume :
94
Pages :
035428
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FNR - Fonds National de la Recherche [LU]
DFG - Deutsche Forschungsgemeinschaft [DE]
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