تقرير
Scattering theory of delicate topological insulators
| العنوان: | Scattering theory of delicate topological insulators |
|---|---|
| المؤلفون: | Zhu, Penghao, Noh, Jiho, Liu, Yingkai, Hughes, Taylor L. |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | We study the scattering theory of delicate topological insulators (TIs), which are novel topological phases beyond the paradigm of the tenfold way, topological quantum chemistry, and the symmetry indicator method. We demonstrate that the phase of the reflection amplitude can probe the delicate topology by capturing a characteristic feature of a delicate TI. This feature is the returning Thouless pump, where an integer number of charges are pumped forward and backward in the first and second half of the adiabatic cycle respectively. As a byproduct of our analysis we show that requiring additional symmetries can stable the boundary states of a delicate TI beyond the conventional requirement of a sharply defined surface. Furthermore, we propose a photonic crystal experiment to implement a delicate TI and measure its reflection phase which reveals the delicate topology. Comment: 10+5 pages; 7+4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.107.195110 |
| URL الوصول: | http://arxiv.org/abs/2210.02459 |
| رقم الأكسشن: | edsarx.2210.02459 |
| قاعدة البيانات: | arXiv |
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