Spin-triplet superconductivity from excitonic effect in doped insulators
Significance We present a mechanism for unconventional superconductivity in doped band insulators, where short-ranged pairing interaction arises from Coulomb repulsion due to virtual interband or excitonic processes. Remarkably, electron pairing is found upon infinitesimal doping, givin...
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| Format: | Article |
| Language: | English |
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Proceedings of the National Academy of Sciences
2022
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| Online Access: | https://hdl.handle.net/1721.1/141856 |
| _version_ | 1811070473435348992 |
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| author | Crépel, Valentin Fu, Liang |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Crépel, Valentin Fu, Liang |
| author_sort | Crépel, Valentin |
| collection | MIT |
| description | Significance
We present a mechanism for unconventional superconductivity in doped band insulators, where short-ranged pairing interaction arises from Coulomb repulsion due to virtual interband or excitonic processes. Remarkably, electron pairing is found upon infinitesimal doping, giving rise to Bose–Einstein condensate (BEC)–Bardeen–Cooper–Schrieffer (BCS) crossover at low density. Our theory explains puzzling behaviors of superconductivity and predicts spin-triplet pairing in electron-doped ZrNCl and WTe
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| first_indexed | 2024-09-23T08:36:35Z |
| format | Article |
| id | mit-1721.1/141856 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:36:35Z |
| publishDate | 2022 |
| publisher | Proceedings of the National Academy of Sciences |
| record_format | dspace |
| spelling | mit-1721.1/1418562023-02-15T21:50:01Z Spin-triplet superconductivity from excitonic effect in doped insulators Crépel, Valentin Fu, Liang Massachusetts Institute of Technology. Department of Physics Significance We present a mechanism for unconventional superconductivity in doped band insulators, where short-ranged pairing interaction arises from Coulomb repulsion due to virtual interband or excitonic processes. Remarkably, electron pairing is found upon infinitesimal doping, giving rise to Bose–Einstein condensate (BEC)–Bardeen–Cooper–Schrieffer (BCS) crossover at low density. Our theory explains puzzling behaviors of superconductivity and predicts spin-triplet pairing in electron-doped ZrNCl and WTe <jats:sub>2</jats:sub> . 2022-04-12T14:18:20Z 2022-04-12T14:18:20Z 2022-03-29 2022-04-12T14:06:37Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141856 Crépel, Valentin and Fu, Liang. 2022. "Spin-triplet superconductivity from excitonic effect in doped insulators." Proceedings of the National Academy of Sciences, 119 (13). en 10.1073/pnas.2117735119 Proceedings of the National Academy of Sciences 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. application/pdf Proceedings of the National Academy of Sciences PNAS |
| spellingShingle | Crépel, Valentin Fu, Liang Spin-triplet superconductivity from excitonic effect in doped insulators |
| title | Spin-triplet superconductivity from excitonic effect in doped insulators |
| title_full | Spin-triplet superconductivity from excitonic effect in doped insulators |
| title_fullStr | Spin-triplet superconductivity from excitonic effect in doped insulators |
| title_full_unstemmed | Spin-triplet superconductivity from excitonic effect in doped insulators |
| title_short | Spin-triplet superconductivity from excitonic effect in doped insulators |
| title_sort | spin triplet superconductivity from excitonic effect in doped insulators |
| url | https://hdl.handle.net/1721.1/141856 |
| work_keys_str_mv | AT crepelvalentin spintripletsuperconductivityfromexcitoniceffectindopedinsulators AT fuliang spintripletsuperconductivityfromexcitoniceffectindopedinsulators |