Intraband collective excitations in fractional Chern insulators are dark
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913815232249856 |
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| author | Wolf, Tobias M. R. Chao, Yung-Chun MacDonald, Allan H. Su, Jung Jung |
| author_facet | Wolf, Tobias M. R. Chao, Yung-Chun MacDonald, Allan H. Su, Jung Jung |
| contents | The low-energy collective excitations of semiconductors and insulators often couple strongly to light, allowing them to be probed optically. We argue here that in fractional Chern insulators intra-band collective excitations are dark in the sense that they couple anomalously weakly to light. This conclusion is based on a relationship between ideal quantum geometry and the structure factor of a Chern band, and on a classical plasma analogy motivated by the vortexibility property of ideal Chern bands. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_10709 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Intraband collective excitations in fractional Chern insulators are dark Wolf, Tobias M. R. Chao, Yung-Chun MacDonald, Allan H. Su, Jung Jung Strongly Correlated Electrons The low-energy collective excitations of semiconductors and insulators often couple strongly to light, allowing them to be probed optically. We argue here that in fractional Chern insulators intra-band collective excitations are dark in the sense that they couple anomalously weakly to light. This conclusion is based on a relationship between ideal quantum geometry and the structure factor of a Chern band, and on a classical plasma analogy motivated by the vortexibility property of ideal Chern bands. |
| title | Intraband collective excitations in fractional Chern insulators are dark |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2406.10709 |