Violation of local reciprocity in charge-orbital interconversion
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
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| _version_ | 1866908840116617216 |
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| author | Kashiki, Hisanobu Hayashi, Hiroki Go, Dongwook Mokrousov, Yuriy Ando, Kazuya |
| author_facet | Kashiki, Hisanobu Hayashi, Hiroki Go, Dongwook Mokrousov, Yuriy Ando, Kazuya |
| contents | We demonstrate a violation of local reciprocity in the interconversion between charge and orbital currents. By investigating orbital torque and orbital pumping in W/Ni bilayers, we show that the charge-orbital interconversion in the bulk of the W layer exhibits opposite signs in the direct and inverse processes -- the direct and inverse orbital Hall effects being positive and negative, respectively. This finding provides direct evidence of local nonreciprocity in the charge-orbital interconversion, in agreement with a theoretical prediction. These results highlight the unique characteristics of charge-orbital coupled transport and offer fundamental insights into the mechanisms underlying orbital-current-driven phenomena. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_05139 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Violation of local reciprocity in charge-orbital interconversion Kashiki, Hisanobu Hayashi, Hiroki Go, Dongwook Mokrousov, Yuriy Ando, Kazuya Mesoscale and Nanoscale Physics Materials Science We demonstrate a violation of local reciprocity in the interconversion between charge and orbital currents. By investigating orbital torque and orbital pumping in W/Ni bilayers, we show that the charge-orbital interconversion in the bulk of the W layer exhibits opposite signs in the direct and inverse processes -- the direct and inverse orbital Hall effects being positive and negative, respectively. This finding provides direct evidence of local nonreciprocity in the charge-orbital interconversion, in agreement with a theoretical prediction. These results highlight the unique characteristics of charge-orbital coupled transport and offer fundamental insights into the mechanisms underlying orbital-current-driven phenomena. |
| title | Violation of local reciprocity in charge-orbital interconversion |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2504.05139 |