Floquet Control of Indirect Exchange Interaction in Periodically Driven Two-Dimensional Electron Systems
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2020
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| _version_ | 1866909300960526336 |
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| author | Asmar, Mahmoud M. Tse, Wang-Kong |
| author_facet | Asmar, Mahmoud M. Tse, Wang-Kong |
| contents | We present a theory for the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction mediated by a two-dimensional (2D) electron system subjected to periodic driving. This is demonstrated for a heterostructure consisting of two ferromagnets laterally sandwiching the 2D metallic spacer. Our calculations reveal new non-analytic features in the spin susceptibility. For weak light-matter coupling, the RKKY interaction shows oscillations with a period tunable by the light amplitude and frequency. For stronger light-matter coupling, the interaction becomes non-oscillatory and remains purely ferromagnetic. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2003_14383 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Floquet Control of Indirect Exchange Interaction in Periodically Driven Two-Dimensional Electron Systems Asmar, Mahmoud M. Tse, Wang-Kong Mesoscale and Nanoscale Physics We present a theory for the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction mediated by a two-dimensional (2D) electron system subjected to periodic driving. This is demonstrated for a heterostructure consisting of two ferromagnets laterally sandwiching the 2D metallic spacer. Our calculations reveal new non-analytic features in the spin susceptibility. For weak light-matter coupling, the RKKY interaction shows oscillations with a period tunable by the light amplitude and frequency. For stronger light-matter coupling, the interaction becomes non-oscillatory and remains purely ferromagnetic. |
| title | Floquet Control of Indirect Exchange Interaction in Periodically Driven Two-Dimensional Electron Systems |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2003.14383 |