تقرير
Efficient algorithms for surface density of states in topological photonic and acoustic systems
| العنوان: | Efficient algorithms for surface density of states in topological photonic and acoustic systems |
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| المؤلفون: | Sha, Yi-Xin, Xia, Ming-Yao, Lu, Ling, Yang, Yi |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Optics, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Robust surface states are a defining feature of topological photonic and acoustic systems. Although the supercell technique is commonly used for studying their surface effects, it falls short in sorting the states at two boundaries, differentiating surface states from bulk states, and demanding large computational resources. To overcome the limitations, we employ surface Green's functions combined with two efficient algorithms to obtain the ideal surface states for a semi-infinite system. They are further extended to more complex scenarios, such as coated structures, heterostructures, and sandwiched structures. Photonic Chern insulators, valley photonic crystals, and acoustic topological insulators are taken as examples for demonstration and verification. The surface spectra obtained from our approach can be directly used for comparison with experimental observables. Our approach enriches the efficient computational tools for topological photonics and acoustics. Comment: 11 pages, 7 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2408.07929 |
| رقم الأكسشن: | edsarx.2408.07929 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |