Optically induced spin Hall current in Janus transition-metal dichalcogenides
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866916762565476352 |
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| author | Kameda, Tomoaki Wakabayashi, Katsunori |
| author_facet | Kameda, Tomoaki Wakabayashi, Katsunori |
| contents | Monolayer Janus transition-metal dichalcogenides (TMDCs), such as WSeTe, exhibit Rashba-type spin-orbit coupling (SOC) due to broken out-of-plane mirror symmetry. Here, we theoretically demonstrate that pure spin Hall currents can be generated under light irradiation based on a tight-binding model. Rashba-type SOC plays a crucial role in determining the spin polarization direction and enhancing the generation efficiency of pure spin Hall currents. Our findings establish Janus TMDCs as promising materials for next-generation optospintronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_06622 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optically induced spin Hall current in Janus transition-metal dichalcogenides Kameda, Tomoaki Wakabayashi, Katsunori Mesoscale and Nanoscale Physics Monolayer Janus transition-metal dichalcogenides (TMDCs), such as WSeTe, exhibit Rashba-type spin-orbit coupling (SOC) due to broken out-of-plane mirror symmetry. Here, we theoretically demonstrate that pure spin Hall currents can be generated under light irradiation based on a tight-binding model. Rashba-type SOC plays a crucial role in determining the spin polarization direction and enhancing the generation efficiency of pure spin Hall currents. Our findings establish Janus TMDCs as promising materials for next-generation optospintronic devices. |
| title | Optically induced spin Hall current in Janus transition-metal dichalcogenides |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.06622 |