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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.13947 |
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| _version_ | 1866917843780501504 |
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| author | Nishijima, Taiki Shigematsu, Ei Ohshima, Ryo Matsushita, Keigo Ohta, Akio Araidai, Masaaki Yuhara, Junji Kurosawa, Masashi Shiraishi, Masashi Ando, Yuichiro |
| author_facet | Nishijima, Taiki Shigematsu, Ei Ohshima, Ryo Matsushita, Keigo Ohta, Akio Araidai, Masaaki Yuhara, Junji Kurosawa, Masashi Shiraishi, Masashi Ando, Yuichiro |
| contents | Spin-to-charge conversion in monolayer and bilayer germanium(Ge) nanosheets was demonstrated via the circular photogalvanic effect (CPGE). The CPGE current generated in a spin-splitting state of the Ge nanosheet reached a maximum value when the thickness of the Ge nanosheet corresponded to bilayer germanene, indicating that the top layer of the bilayer Ge nanosheet mainly contributed to the spin-to-charge conversion. Because the hybridization of orbitals is suppressed by isolation from the bottom Al layer for the top Ge nanosheet, the observed spin-to-charge conversion has a possibility to be related to the intrinsic features of germanene with breaking of inversion symmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_13947 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Circular photogalvanic effect in an inversion-symmetry-broken bilayer germanium nanosheet Nishijima, Taiki Shigematsu, Ei Ohshima, Ryo Matsushita, Keigo Ohta, Akio Araidai, Masaaki Yuhara, Junji Kurosawa, Masashi Shiraishi, Masashi Ando, Yuichiro Materials Science Spin-to-charge conversion in monolayer and bilayer germanium(Ge) nanosheets was demonstrated via the circular photogalvanic effect (CPGE). The CPGE current generated in a spin-splitting state of the Ge nanosheet reached a maximum value when the thickness of the Ge nanosheet corresponded to bilayer germanene, indicating that the top layer of the bilayer Ge nanosheet mainly contributed to the spin-to-charge conversion. Because the hybridization of orbitals is suppressed by isolation from the bottom Al layer for the top Ge nanosheet, the observed spin-to-charge conversion has a possibility to be related to the intrinsic features of germanene with breaking of inversion symmetry. |
| title | Circular photogalvanic effect in an inversion-symmetry-broken bilayer germanium nanosheet |
| topic | Materials Science |
| url | https://arxiv.org/abs/2411.13947 |