تقرير
Intraband collective excitations in fractional Chern insulators are dark
| العنوان: | Intraband collective excitations in fractional Chern insulators are dark |
|---|---|
| المؤلفون: | Wolf, Tobias M. R., Chao, Yung-Chun, MacDonald, Allan H., Su, Jung Jung |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | 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. Comment: Main text: 5 pages, 3 figures, Supmat: 5 pages, 1 figure; Comments are welcome |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2406.10709 |
| رقم الأكسشن: | edsarx.2406.10709 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |