Reference : Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/27429

Title :	Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures
Language :	English
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 >]
Publication date :	18-Jul-2016
Journal title :	Physical Review. B
Publisher :	American Physical Society
Volume :	94
Pages :	035428
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	2469-9950
e-ISSN :	2469-9969
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.
Funders :	Fonds National de la Recherche - FnR ; DFG
Permalink :	http://hdl.handle.net/10993/27429
DOI :	10.1103/PhysRevB.94.035428
Mentions required by the publisher for OA :	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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