Intrinsic Rashba Spin-Orbit Coupling in Staggered-Gyromagnetic Photonic Crystals
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915381612904448 |
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| author | Wang, Yao-Ting Gao, Wenlong |
| author_facet | Wang, Yao-Ting Gao, Wenlong |
| contents | We report the realization of intrinsic Rashba spin-orbit coupling (SOC) in a two-dimensional photonic crystal composed of staggered-gyromagnetic cylinders in a modified honeycomb lattice. The system exhibits a Mexican-hat-like band structure and helical spin textures, which is the major characteristics of Rashba SOC. Through both full-wave simulations and k-p theory, we confirm the emergence of spin-split bands and vortex-like spin textures centered at the Brillouin zone. In addition, under oblique incidence, the Rashba band dispersion gives rise to concurrent negative and a positive refraction. These results establish a platform for exploring intrinsic Rashba photonics and spin-controlled wave transport in periodic systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_07462 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Intrinsic Rashba Spin-Orbit Coupling in Staggered-Gyromagnetic Photonic Crystals Wang, Yao-Ting Gao, Wenlong Optics We report the realization of intrinsic Rashba spin-orbit coupling (SOC) in a two-dimensional photonic crystal composed of staggered-gyromagnetic cylinders in a modified honeycomb lattice. The system exhibits a Mexican-hat-like band structure and helical spin textures, which is the major characteristics of Rashba SOC. Through both full-wave simulations and k-p theory, we confirm the emergence of spin-split bands and vortex-like spin textures centered at the Brillouin zone. In addition, under oblique incidence, the Rashba band dispersion gives rise to concurrent negative and a positive refraction. These results establish a platform for exploring intrinsic Rashba photonics and spin-controlled wave transport in periodic systems. |
| title | Intrinsic Rashba Spin-Orbit Coupling in Staggered-Gyromagnetic Photonic Crystals |
| topic | Optics |
| url | https://arxiv.org/abs/2507.07462 |