Optical Berry Curvature of Hinge State and Its Detection
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2022
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866913233963581440 |
|---|---|
| author | Liu, Zheng Qiao, Zhenhua Gao, Yang Niu, Qian |
| author_facet | Liu, Zheng Qiao, Zhenhua Gao, Yang Niu, Qian |
| contents | We demonstrate that the topological hinge state can possess a nontrivial optical Berry curvature in the nonAbelian formulation of the Berry curvature. It can be readily probed by the circular photogalvanic effect (CPGE), with the light illuminating a specific hinge, and we refer to it as the hinge CPGE. As a concrete example, we calculate the hinge CPGE in ferromagnetic MnBi2nTe3n+1, and find that the hinge CPGE peak structure well reflects the optical Berry curvature of hinge states and the optical sum rule captures the optical Berry curvature between the hinge state and the ground state. Thus, the hinge CPGE provides a promising route towards the optical detection of the hinge state geometrical structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_08875 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Optical Berry Curvature of Hinge State and Its Detection Liu, Zheng Qiao, Zhenhua Gao, Yang Niu, Qian Mesoscale and Nanoscale Physics We demonstrate that the topological hinge state can possess a nontrivial optical Berry curvature in the nonAbelian formulation of the Berry curvature. It can be readily probed by the circular photogalvanic effect (CPGE), with the light illuminating a specific hinge, and we refer to it as the hinge CPGE. As a concrete example, we calculate the hinge CPGE in ferromagnetic MnBi2nTe3n+1, and find that the hinge CPGE peak structure well reflects the optical Berry curvature of hinge states and the optical sum rule captures the optical Berry curvature between the hinge state and the ground state. Thus, the hinge CPGE provides a promising route towards the optical detection of the hinge state geometrical structure. |
| title | Optical Berry Curvature of Hinge State and Its Detection |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2212.08875 |