تقرير
Critical Filaments and Superconductivity in Quasiperiodic Twisted Bilayer Graphene
| العنوان: | Critical Filaments and Superconductivity in Quasiperiodic Twisted Bilayer Graphene |
|---|---|
| المؤلفون: | Zhang, Xinghai, Wilson, Justin H., Foster, Matthew S. |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Superconductivity |
| الوصف: | Moir\'e materials can exhibit electronic topological features yet are inherently quasiperiodic. Nonetheless, the localizing tendency of quasiperiodicity can be prevented by topology. We consider a quasiperiodic variant of the chiral Bistritzer-MacDonald model for twisted bilayer graphene with two incommensurate moir\'e potentials. We observe "filaments" linking magic angles with enhanced density of states and fractal wave functions that evade localization; states away from the filaments mimic fractal surface states of dirty topological superconductors. We demonstrate that topological quasiperiodicity can broadly enhance superconductivity without magic-angle fine-tuning. Comment: 6 + 21 pages, 5 + 7 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2406.06676 |
| رقم الأكسشن: | edsarx.2406.06676 |
| قاعدة البيانات: | arXiv |
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