Universal theory of tunable second-order topological corner states induced by interlayer coupling in twist bilayer Chern insulators
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866913522407964672 |
|---|---|
| author | Miao, Cheng-Ming Wan, Yu-Hao Zhang, Ying-Tao Sun, Qing-Feng |
| author_facet | Miao, Cheng-Ming Wan, Yu-Hao Zhang, Ying-Tao Sun, Qing-Feng |
| contents | We propose a universal theory for tunable second-order topological corner states induced by interlayer coupling in bilayer Chern insulators with opposite Chern numbers. We demonstrate that the existence of the topological corner state is determined by the relationship between the twist angle of the bilayer Chern insulators and the normal angles of the two sides of the corner. In addition, the position of these corner states can be sensitively controlled by the twist angle, as confirmed by a rigorous analysis of edge state theory. Our findings serve as a universal theory, opening avenues for the design and realization of higher-order topological materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_19328 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Universal theory of tunable second-order topological corner states induced by interlayer coupling in twist bilayer Chern insulators Miao, Cheng-Ming Wan, Yu-Hao Zhang, Ying-Tao Sun, Qing-Feng Mesoscale and Nanoscale Physics We propose a universal theory for tunable second-order topological corner states induced by interlayer coupling in bilayer Chern insulators with opposite Chern numbers. We demonstrate that the existence of the topological corner state is determined by the relationship between the twist angle of the bilayer Chern insulators and the normal angles of the two sides of the corner. In addition, the position of these corner states can be sensitively controlled by the twist angle, as confirmed by a rigorous analysis of edge state theory. Our findings serve as a universal theory, opening avenues for the design and realization of higher-order topological materials. |
| title | Universal theory of tunable second-order topological corner states induced by interlayer coupling in twist bilayer Chern insulators |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.19328 |