Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator
Two-dimensional topological photonic crystals have rapidly emerged as a recent and fascinating branch of photonic research. However, most of them were limited to a specific type of polarization, TE or TM polarization. Here, we explored the dual-polarization topological phases in two-dimensional magn...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ac1c84 |
| _version_ | 1827872750121779200 |
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| author | Xiang Xi Xi-Ming Li Kang-Ping Ye Hua-Bing Wu Jian Chen Rui-Xin Wu |
| author_facet | Xiang Xi Xi-Ming Li Kang-Ping Ye Hua-Bing Wu Jian Chen Rui-Xin Wu |
| author_sort | Xiang Xi |
| collection | DOAJ |
| description | Two-dimensional topological photonic crystals have rapidly emerged as a recent and fascinating branch of photonic research. However, most of them were limited to a specific type of polarization, TE or TM polarization. Here, we explored the dual-polarization topological phases in two-dimensional magnetic photonic crystal (PC) which are composed of ferrite rod clusters in the plasma background. Under the perturbations of the bias magnetic field and/or the cluster distortion in the unit cell, the PC exhibited dual-polarization topological phases, including the quantum Hall (QH) phase, the higher-order quantum spin Hall (HO-QSH) phase and the conventional insulator (CI) phase. We studied the topological nature of these phases by the Wilson loop, Chern number, and unidirectional edge states. Intriguingly, we showed that the HO-QSH phases could present in PC of C _3 _v symmetry instead of being restricted to C _6 _v symmetry. The lower symmetry enlarges the gap in the edge states, which helps for the emergence of corner states. By continuously deforming the unit cell configuration, we demonstrated the phase transition in the system was dual-polarization. Our results extend the topological phases in the PCs and pave the way for the dual-polarization topological devices and their applications. |
| first_indexed | 2024-03-12T16:28:17Z |
| format | Article |
| id | doaj.art-42b38b8e295643f99e091b6964ce907b |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:28:17Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-42b38b8e295643f99e091b6964ce907b2023-08-08T15:37:13ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123808304210.1088/1367-2630/ac1c84Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulatorXiang Xi0Xi-Ming Li1Kang-Ping Ye2Hua-Bing Wu3Jian Chen4Rui-Xin Wu5School of Electronic Science and Engineering, Nanjing University , Nanjing 201193, People’s Republic of ChinaSchool of Electronic Science and Engineering, Nanjing University , Nanjing 201193, People’s Republic of ChinaSchool of Electronic Science and Engineering, Nanjing University , Nanjing 201193, People’s Republic of ChinaSchool of Electronic Science and Engineering, Nanjing University , Nanjing 201193, People’s Republic of ChinaSchool of Electronic Science and Engineering, Nanjing University , Nanjing 201193, People’s Republic of ChinaSchool of Electronic Science and Engineering, Nanjing University , Nanjing 201193, People’s Republic of ChinaTwo-dimensional topological photonic crystals have rapidly emerged as a recent and fascinating branch of photonic research. However, most of them were limited to a specific type of polarization, TE or TM polarization. Here, we explored the dual-polarization topological phases in two-dimensional magnetic photonic crystal (PC) which are composed of ferrite rod clusters in the plasma background. Under the perturbations of the bias magnetic field and/or the cluster distortion in the unit cell, the PC exhibited dual-polarization topological phases, including the quantum Hall (QH) phase, the higher-order quantum spin Hall (HO-QSH) phase and the conventional insulator (CI) phase. We studied the topological nature of these phases by the Wilson loop, Chern number, and unidirectional edge states. Intriguingly, we showed that the HO-QSH phases could present in PC of C _3 _v symmetry instead of being restricted to C _6 _v symmetry. The lower symmetry enlarges the gap in the edge states, which helps for the emergence of corner states. By continuously deforming the unit cell configuration, we demonstrated the phase transition in the system was dual-polarization. Our results extend the topological phases in the PCs and pave the way for the dual-polarization topological devices and their applications.https://doi.org/10.1088/1367-2630/ac1c84topological photonicsphotonic crystaldual-polarization topological phases |
| spellingShingle | Xiang Xi Xi-Ming Li Kang-Ping Ye Hua-Bing Wu Jian Chen Rui-Xin Wu Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator New Journal of Physics topological photonics photonic crystal dual-polarization topological phases |
| title | Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator |
| title_full | Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator |
| title_fullStr | Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator |
| title_full_unstemmed | Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator |
| title_short | Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator |
| title_sort | dual polarization topological phases and phase transition in magnetic photonic crystalline insulator |
| topic | topological photonics photonic crystal dual-polarization topological phases |
| url | https://doi.org/10.1088/1367-2630/ac1c84 |
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