Electrically tunable low-density superconductivity in a monolayer topological insulator
Turning on superconductivity in a topologically nontrivial insulator may provide a route to search for non-Abelian topological states. However, existing demonstrations of superconductor-insulator switches have involved only topologically trivial systems. Here we report reversible, in situ electrosta...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
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American Association for the Advancement of Science (AAAS)
2020
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| Online Access: | https://hdl.handle.net/1721.1/125629 |
| _version_ | 1826212130667364352 |
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| author | Fatemi, Valla Wu, Sanfeng Cao, Yuan Bretheau, Landry Gibson, Quinn D. Watanabe, Kenji Taniguchi, Takashi Cava, Robert J. Jarillo-Herrero, Pablo |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Fatemi, Valla Wu, Sanfeng Cao, Yuan Bretheau, Landry Gibson, Quinn D. Watanabe, Kenji Taniguchi, Takashi Cava, Robert J. Jarillo-Herrero, Pablo |
| author_sort | Fatemi, Valla |
| collection | MIT |
| description | Turning on superconductivity in a topologically nontrivial insulator may provide a route to search for non-Abelian topological states. However, existing demonstrations of superconductor-insulator switches have involved only topologically trivial systems. Here we report reversible, in situ electrostatic on-off switching of superconductivity in the recently established quantum spin Hall insulator monolayer tungsten ditelluride (WTe2). Fabricated into a van der Waals field-effect transistor, the monolayer's ground state can be continuously gate-tuned from the topological insulating to the superconducting state, with critical temperatures Tc up to ∼1 kelvin. Our results establish monolayer WTe2 as a material platform for engineering nanodevices that combine superconducting and topological phases of matter. |
| first_indexed | 2024-09-23T15:16:32Z |
| format | Article |
| id | mit-1721.1/125629 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:16:32Z |
| publishDate | 2020 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1256292022-09-29T13:51:07Z Electrically tunable low-density superconductivity in a monolayer topological insulator Fatemi, Valla Wu, Sanfeng Cao, Yuan Bretheau, Landry Gibson, Quinn D. Watanabe, Kenji Taniguchi, Takashi Cava, Robert J. Jarillo-Herrero, Pablo Massachusetts Institute of Technology. Department of Physics Turning on superconductivity in a topologically nontrivial insulator may provide a route to search for non-Abelian topological states. However, existing demonstrations of superconductor-insulator switches have involved only topologically trivial systems. Here we report reversible, in situ electrostatic on-off switching of superconductivity in the recently established quantum spin Hall insulator monolayer tungsten ditelluride (WTe2). Fabricated into a van der Waals field-effect transistor, the monolayer's ground state can be continuously gate-tuned from the topological insulating to the superconducting state, with critical temperatures Tc up to ∼1 kelvin. Our results establish monolayer WTe2 as a material platform for engineering nanodevices that combine superconducting and topological phases of matter. AFOSR Grant No. FA9550-16-1-0382 Gordon and Betty Moore Foundation’s EPiQS Initiative through Grant No. GBMF4541 DOE, Basic Energy Sciences Office, under Award No. DE-SC0001088 2020-06-02T18:35:50Z 2020-06-02T18:35:50Z 2018-10 2019-03-27T13:46:29Z Article http://purl.org/eprint/type/JournalArticle 0036-8075 1095-9203 https://hdl.handle.net/1721.1/125629 Fatemi, Valla, et al. “Electrically Tunable Low-Density Superconductivity in a Monolayer Topological Insulator.” Science, 362, 6417 (November 2018): 926–929. http://dx.doi.org/10.1126/SCIENCE.AAR4642 Science http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Association for the Advancement of Science (AAAS) arXiv |
| spellingShingle | Fatemi, Valla Wu, Sanfeng Cao, Yuan Bretheau, Landry Gibson, Quinn D. Watanabe, Kenji Taniguchi, Takashi Cava, Robert J. Jarillo-Herrero, Pablo Electrically tunable low-density superconductivity in a monolayer topological insulator |
| title | Electrically tunable low-density superconductivity in a monolayer topological insulator |
| title_full | Electrically tunable low-density superconductivity in a monolayer topological insulator |
| title_fullStr | Electrically tunable low-density superconductivity in a monolayer topological insulator |
| title_full_unstemmed | Electrically tunable low-density superconductivity in a monolayer topological insulator |
| title_short | Electrically tunable low-density superconductivity in a monolayer topological insulator |
| title_sort | electrically tunable low density superconductivity in a monolayer topological insulator |
| url | https://hdl.handle.net/1721.1/125629 |
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