Rotation controlled topological edge states in a trimer chain composed of meta-atoms
Recently, topological chains have attracted extensive attention because of their simple structure, rich physics and important applications. In this work, we theoretically and experimentally uncover that the abundant topological phases of periodic trimer chain composed of one kind of meta-atom, namel...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac71bd |
| _version_ | 1797748508898361344 |
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| author | Zhiwei Guo Xian Wu Shaolin Ke Lijuan Dong Fusheng Deng Haitao Jiang Hong Chen |
| author_facet | Zhiwei Guo Xian Wu Shaolin Ke Lijuan Dong Fusheng Deng Haitao Jiang Hong Chen |
| author_sort | Zhiwei Guo |
| collection | DOAJ |
| description | Recently, topological chains have attracted extensive attention because of their simple structure, rich physics and important applications. In this work, we theoretically and experimentally uncover that the abundant topological phases of periodic trimer chain composed of one kind of meta-atom, namely split-ring resonators (SRRs), can be flexibly controlled by tunning the rotation angle of SRRs. On the one hand, we study the rotation controlled phase transition between two topological distinguished trimer chains with inversion symmetry. The generation of symmetric edge states can be easily controlled in this phase transition. On the other hand, the topological phases of the trimer chain broken inversion symmetry is demonstrated. Especially, the rotation controlled asymmetric edge states are observed in this process. So, rotation provides a new degree of freedom to manipulate edge states in the trimer chain composed of SRRs. The results in this work not only provide a flexible way to observe controlled edge states, but also provide a good research platform for designing other topological models with complex coupling distributions. |
| first_indexed | 2024-03-12T16:05:48Z |
| format | Article |
| id | doaj.art-a52d8b38c2164abeac25d8dd806a5953 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:05:48Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-a52d8b38c2164abeac25d8dd806a59532023-08-09T14:22:44ZengIOP PublishingNew Journal of Physics1367-26302022-01-0124606300110.1088/1367-2630/ac71bdRotation controlled topological edge states in a trimer chain composed of meta-atomsZhiwei Guo0https://orcid.org/0000-0002-8973-307XXian Wu1Shaolin Ke2Lijuan Dong3Fusheng Deng4Haitao Jiang5Hong Chen6Key Laboratory of Advanced Micro-structure Materials, MOE, School of Physics Science and Engineering, Tongji University , Shanghai, 200092, People’s Republic of China; Shanxi Provincial Key Laboratory of Microstructure Electromagnetic Functional Materials, Shanxi Datong University , Datong, 037009, People’s Republic of ChinaKey Laboratory of Advanced Micro-structure Materials, MOE, School of Physics Science and Engineering, Tongji University , Shanghai, 200092, People’s Republic of ChinaHubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology , Wuhan, 430205, People’s Republic of ChinaShanxi Provincial Key Laboratory of Microstructure Electromagnetic Functional Materials, Shanxi Datong University , Datong, 037009, People’s Republic of ChinaShanxi Provincial Key Laboratory of Microstructure Electromagnetic Functional Materials, Shanxi Datong University , Datong, 037009, People’s Republic of ChinaKey Laboratory of Advanced Micro-structure Materials, MOE, School of Physics Science and Engineering, Tongji University , Shanghai, 200092, People’s Republic of ChinaKey Laboratory of Advanced Micro-structure Materials, MOE, School of Physics Science and Engineering, Tongji University , Shanghai, 200092, People’s Republic of ChinaRecently, topological chains have attracted extensive attention because of their simple structure, rich physics and important applications. In this work, we theoretically and experimentally uncover that the abundant topological phases of periodic trimer chain composed of one kind of meta-atom, namely split-ring resonators (SRRs), can be flexibly controlled by tunning the rotation angle of SRRs. On the one hand, we study the rotation controlled phase transition between two topological distinguished trimer chains with inversion symmetry. The generation of symmetric edge states can be easily controlled in this phase transition. On the other hand, the topological phases of the trimer chain broken inversion symmetry is demonstrated. Especially, the rotation controlled asymmetric edge states are observed in this process. So, rotation provides a new degree of freedom to manipulate edge states in the trimer chain composed of SRRs. The results in this work not only provide a flexible way to observe controlled edge states, but also provide a good research platform for designing other topological models with complex coupling distributions.https://doi.org/10.1088/1367-2630/ac71bdphotonic edge statestopological transitionsplit-ring resonators |
| spellingShingle | Zhiwei Guo Xian Wu Shaolin Ke Lijuan Dong Fusheng Deng Haitao Jiang Hong Chen Rotation controlled topological edge states in a trimer chain composed of meta-atoms New Journal of Physics photonic edge states topological transition split-ring resonators |
| title | Rotation controlled topological edge states in a trimer chain composed of meta-atoms |
| title_full | Rotation controlled topological edge states in a trimer chain composed of meta-atoms |
| title_fullStr | Rotation controlled topological edge states in a trimer chain composed of meta-atoms |
| title_full_unstemmed | Rotation controlled topological edge states in a trimer chain composed of meta-atoms |
| title_short | Rotation controlled topological edge states in a trimer chain composed of meta-atoms |
| title_sort | rotation controlled topological edge states in a trimer chain composed of meta atoms |
| topic | photonic edge states topological transition split-ring resonators |
| url | https://doi.org/10.1088/1367-2630/ac71bd |
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