Electrically tunable quantum spin Hall state in topological crystalline insulator thin films
Based on electronic structure calculations and theoretical analysis, we predict the (111) thin films of the SnTe class of three-dimensional (3D) topological crystalline insulators (TCIs) realize the quantum spin Hall phase in a wide range of thicknesses. The nontrivial topology originates from the i...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2015
|
| Online Access: | http://hdl.handle.net/1721.1/95770 https://orcid.org/0000-0002-8803-1017 https://orcid.org/0000-0001-8051-7349 |
| _version_ | 1826201778202345472 |
|---|---|
| author | Liu, Junwei Fu, Liang |
| author2 | Massachusetts Institute of Technology. Materials Processing Center |
| author_facet | Massachusetts Institute of Technology. Materials Processing Center Liu, Junwei Fu, Liang |
| author_sort | Liu, Junwei |
| collection | MIT |
| description | Based on electronic structure calculations and theoretical analysis, we predict the (111) thin films of the SnTe class of three-dimensional (3D) topological crystalline insulators (TCIs) realize the quantum spin Hall phase in a wide range of thicknesses. The nontrivial topology originates from the intersurface coupling of the topological surface states of TCIs in the 3D limit. The intersurface coupling changes sign and gives rise to topological phase transitions as a function of film thickness. Furthermore, this coupling can be strongly affected by an external electric field, hence the quantum spin Hall phase can be effectively tuned under the experimentally accessible electric field. |
| first_indexed | 2024-09-23T11:56:37Z |
| format | Article |
| id | mit-1721.1/95770 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:56:37Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/957702022-09-27T22:59:16Z Electrically tunable quantum spin Hall state in topological crystalline insulator thin films Liu, Junwei Fu, Liang Massachusetts Institute of Technology. Materials Processing Center Massachusetts Institute of Technology. Department of Physics Liu, Junwei Fu, Liang Based on electronic structure calculations and theoretical analysis, we predict the (111) thin films of the SnTe class of three-dimensional (3D) topological crystalline insulators (TCIs) realize the quantum spin Hall phase in a wide range of thicknesses. The nontrivial topology originates from the intersurface coupling of the topological surface states of TCIs in the 3D limit. The intersurface coupling changes sign and gives rise to topological phase transitions as a function of film thickness. Furthermore, this coupling can be strongly affected by an external electric field, hence the quantum spin Hall phase can be effectively tuned under the experimentally accessible electric field. National Science Foundation (U.S.) (STC Center for Integrated Quantum Materials) National Science Foundation (U.S.) (Grant DMR-1231319) 2015-03-03T19:50:51Z 2015-03-03T19:50:51Z 2015-02 2015-01 2015-02-27T23:00:08Z Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/95770 Liu, Junwei, and Liang Fu. “Electrically Tunable Quantum Spin Hall State in Topological Crystalline Insulator Thin Films.” Phys. Rev. B 91, no. 8 (February 2015). © 2015 American Physical Society https://orcid.org/0000-0002-8803-1017 https://orcid.org/0000-0001-8051-7349 en http://dx.doi.org/10.1103/PhysRevB.91.081407 Physical Review B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Liu, Junwei Fu, Liang Electrically tunable quantum spin Hall state in topological crystalline insulator thin films |
| title | Electrically tunable quantum spin Hall state in topological crystalline insulator thin films |
| title_full | Electrically tunable quantum spin Hall state in topological crystalline insulator thin films |
| title_fullStr | Electrically tunable quantum spin Hall state in topological crystalline insulator thin films |
| title_full_unstemmed | Electrically tunable quantum spin Hall state in topological crystalline insulator thin films |
| title_short | Electrically tunable quantum spin Hall state in topological crystalline insulator thin films |
| title_sort | electrically tunable quantum spin hall state in topological crystalline insulator thin films |
| url | http://hdl.handle.net/1721.1/95770 https://orcid.org/0000-0002-8803-1017 https://orcid.org/0000-0001-8051-7349 |
| work_keys_str_mv | AT liujunwei electricallytunablequantumspinhallstateintopologicalcrystallineinsulatorthinfilms AT fuliang electricallytunablequantumspinhallstateintopologicalcrystallineinsulatorthinfilms |