Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
We investigate electron transport through an antidot embedded in a narrow strip of a two-dimensional topological insulator. We focus on the most generic and experimentally relevant case with broken axial spin symmetry. Spin-nonconservation 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.
Details
Originalsprache | Englisch |
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Aufsatznummer | 035428 |
Fachzeitschrift | Physical Review B |
Jahrgang | 94 |
Ausgabenummer | 3 |
Publikationsstatus | Veröffentlicht - 18 Juli 2016 |
Peer-Review-Status | Ja |