Fundamental Bound on Topological Gap
We provide a universal tight bound on the energy gap of topological insulators by exploring relationships between topology, quantum geometry, and optical absorption. Applications of our theory to infrared absorption near topological band inversion, magnetic circular dichroism in Chern insulators, an...
| Main Authors: | , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2024
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| Online Access: | https://hdl.handle.net/1721.1/155169 |
| _version_ | 1811083801524174848 |
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| author | Onishi, Yugo Fu, Liang |
| author_facet | Onishi, Yugo Fu, Liang |
| author_sort | Onishi, Yugo |
| collection | MIT |
| description | We provide a universal tight bound on the energy gap of topological insulators by exploring relationships between topology, quantum geometry, and optical absorption. Applications of our theory to infrared absorption near topological band inversion, magnetic circular dichroism in Chern insulators, and topological gap in moiré materials are demonstrated. |
| first_indexed | 2024-09-23T12:39:32Z |
| format | Article |
| id | mit-1721.1/155169 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:39:32Z |
| publishDate | 2024 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1551692024-09-19T05:07:18Z Fundamental Bound on Topological Gap Onishi, Yugo Fu, Liang We provide a universal tight bound on the energy gap of topological insulators by exploring relationships between topology, quantum geometry, and optical absorption. Applications of our theory to infrared absorption near topological band inversion, magnetic circular dichroism in Chern insulators, and topological gap in moiré materials are demonstrated. 2024-06-03T20:59:14Z 2024-06-03T20:59:14Z 2024-03-21 Article http://purl.org/eprint/type/JournalArticle 2160-3308 https://hdl.handle.net/1721.1/155169 Onishi, Yugo and Fu, Liang. 2024. "Fundamental Bound on Topological Gap." Physical Review X, 14 (1). en_US 10.1103/physrevx.14.011052 Physical Review X Creative Commons Attribution An error occurred on the license name. https://creativecommons.org/licenses/by/4.0/ application/pdf American Physical Society American Physical Society |
| spellingShingle | Onishi, Yugo Fu, Liang Fundamental Bound on Topological Gap |
| title | Fundamental Bound on Topological Gap |
| title_full | Fundamental Bound on Topological Gap |
| title_fullStr | Fundamental Bound on Topological Gap |
| title_full_unstemmed | Fundamental Bound on Topological Gap |
| title_short | Fundamental Bound on Topological Gap |
| title_sort | fundamental bound on topological gap |
| url | https://hdl.handle.net/1721.1/155169 |
| work_keys_str_mv | AT onishiyugo fundamentalboundontopologicalgap AT fuliang fundamentalboundontopologicalgap |