Interplay of Topological States on TI/TCI Interfaces
dc.contributor.author | Menshchikova, Tatiana V. | |
dc.contributor.author | Eremeev, Sergey V. | |
dc.contributor.author | Kuznetsov, Vladimir M. | |
dc.contributor.author | Chulkov, Evgueni V. | |
dc.date.accessioned | 2020-11-02T11:23:07Z | |
dc.date.available | 2020-11-02T11:23:07Z | |
dc.date.issued | 2020-10-10 | |
dc.identifier.citation | Materials 13(20) : (2020) // Article ID 4481 | es_ES |
dc.identifier.issn | 1996-1944 | |
dc.identifier.uri | http://hdl.handle.net/10810/47607 | |
dc.description.abstract | Based on first-principles calculations, we study electronic structure of interfaces between a Z2 topological insulator (TI) SnBi2Te4 and a topological crystalline insulator (TCI) SnTe. We consider two interface models characterized by the different atomic structure on the contact of the SnTe(111) and SnBi2Te4(0001) slabs: the model when two materials are connected without intermixing (abrupt type of interface) and the interface model predicted to be realized at epitaxial immersion growth on topological insulator substrates (smooth interface). We find that a strong potential gradient at the abrupt interface leads to the redistribution of the topological states deeper from the interface plane which prevents the annihilation of the Γ¯ Dirac states, predicted earlier. In contrast, a smooth interface is characterized by minor charge transfer, which promotes the strong interplay between TI and TCI Γ¯ Dirac cones leading to their complete annihilation.The M¯ topologically protected Dirac state of SnTe(111) survives irrespective of the interface structure. | es_ES |
dc.description.sponsorship | This research was funded by Ministry of Education and Science of the Russian Federation (state task No. 0721-2020-0033), the Government research assignment for ISPMS SB RAS, project No. III.23.2.9. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | topological insulator | es_ES |
dc.subject | topological crystalline insulator | es_ES |
dc.subject | interfaces | es_ES |
dc.subject | density functional theory calculations | es_ES |
dc.title | Interplay of Topological States on TI/TCI Interfaces | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2020-10-26T14:24:27Z | |
dc.rights.holder | 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1996-1944/13/20/4481/htm | es_ES |
dc.identifier.doi | 10.3390/ma13204481 | |
dc.departamentoes | Física de materiales | |
dc.departamentoeu | Materialen fisika |
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Except where otherwise noted, this item's license is described as 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).