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The role of spin-orbit coupling in topologically protected interface states in Dirac materials
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-6166-181X
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2014 (English)In: New Journal of Physics, ISSN 1367-2630, Vol. 16, 065012- p.Article in journal (Refereed) Published
Abstract [en]

We highlight the fact that two-dimensional (2D) materials with Dirac-like low energy band structures and spin-orbit coupling (SOC) will produce linearly dispersing topologically protected Jackiw-Rebbi modes at interfaces where the Dirac mass changes sign. These modes may support persistent spin or valley currents parallel to the interface, and the exact arrangement of such topologically protected currents depends crucially on the details of the SOC in the material. As examples, we discuss buckled 2D hexagonal lattices such as silicene or germanene, and transition metal dichalcogenides such as MoS2.

Place, publisher, year, edition, pages
2014. Vol. 16, 065012- p.
Keyword [en]
Dirac materials, interface states, persistent currents, topological protection
National Category
Other Physics Topics
URN: urn:nbn:se:kth:diva-149217DOI: 10.1088/1367-2630/16/6/065012ISI: 000339085200001ScopusID: 2-s2.0-84903554842OAI: diva2:738516
EU, European Research Council, DM-321031

QC 20140818

Available from: 2014-08-18 Created: 2014-08-18 Last updated: 2014-08-18Bibliographically approved

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Abergel, DavidBalatsky, Alexander V.
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