Topological Phase Diagram of BiTeX–Graphene Hybrid Structures
Combining graphene with other novel layered materials is a possible way for engineering the band structure of charge carriers. Strong spin-orbit coupling in BiTeX compounds and the recent fabrication of a single layer of BiTeI points towards a feasible experimental realization of a Kane−Me...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/20/4330 |
| _version_ | 1819109148788260864 |
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| author | Zoltán Tajkov Dávid Visontai László Oroszlány János Koltai |
| author_facet | Zoltán Tajkov Dávid Visontai László Oroszlány János Koltai |
| author_sort | Zoltán Tajkov |
| collection | DOAJ |
| description | Combining graphene with other novel layered materials is a possible way for engineering the band structure of charge carriers. Strong spin-orbit coupling in BiTeX compounds and the recent fabrication of a single layer of BiTeI points towards a feasible experimental realization of a Kane−Mele phase in graphene-based heterostructures. Here, we theoretically demonstrate the tunability of the topological phase of hybrid systems built from graphene and BiTeX (X = I, Br, Cl) layers by uniaxial in-plane tensile and out-of plane compressive strain. We show that structural stress inherently present in fabricated samples could induce a topological phase transition, thus turning the sample in a novel experimental realization of a time reversal invariant topological insulator. |
| first_indexed | 2024-12-22T03:21:13Z |
| format | Article |
| id | doaj.art-9cdc3549eba14ae48b98b2a0646fe77f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-22T03:21:13Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9cdc3549eba14ae48b98b2a0646fe77f2022-12-21T18:40:43ZengMDPI AGApplied Sciences2076-34172019-10-01920433010.3390/app9204330app9204330Topological Phase Diagram of BiTeX–Graphene Hybrid StructuresZoltán Tajkov0Dávid Visontai1László Oroszlány2János Koltai3Department of Biological Physics, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, HungaryDepartment of Material Physics, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, HungaryDepartment of Physics of Complex Systems, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, HungaryDepartment of Biological Physics, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, HungaryCombining graphene with other novel layered materials is a possible way for engineering the band structure of charge carriers. Strong spin-orbit coupling in BiTeX compounds and the recent fabrication of a single layer of BiTeI points towards a feasible experimental realization of a Kane−Mele phase in graphene-based heterostructures. Here, we theoretically demonstrate the tunability of the topological phase of hybrid systems built from graphene and BiTeX (X = I, Br, Cl) layers by uniaxial in-plane tensile and out-of plane compressive strain. We show that structural stress inherently present in fabricated samples could induce a topological phase transition, thus turning the sample in a novel experimental realization of a time reversal invariant topological insulator.https://www.mdpi.com/2076-3417/9/20/4330graphenedfttopological insulatorsspin-orbit coupling |
| spellingShingle | Zoltán Tajkov Dávid Visontai László Oroszlány János Koltai Topological Phase Diagram of BiTeX–Graphene Hybrid Structures Applied Sciences graphene dft topological insulators spin-orbit coupling |
| title | Topological Phase Diagram of BiTeX–Graphene Hybrid Structures |
| title_full | Topological Phase Diagram of BiTeX–Graphene Hybrid Structures |
| title_fullStr | Topological Phase Diagram of BiTeX–Graphene Hybrid Structures |
| title_full_unstemmed | Topological Phase Diagram of BiTeX–Graphene Hybrid Structures |
| title_short | Topological Phase Diagram of BiTeX–Graphene Hybrid Structures |
| title_sort | topological phase diagram of bitex graphene hybrid structures |
| topic | graphene dft topological insulators spin-orbit coupling |
| url | https://www.mdpi.com/2076-3417/9/20/4330 |
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