Bath-induced spin inertia
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866910639496101888 |
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| author | Quarenta, Mario Gaspar Tharmalingam, Mithuss Ludwig, Tim Yuan, H. Y. Karwacki, Lukasz Verstraten, Robin C. Duine, Rembert |
| author_facet | Quarenta, Mario Gaspar Tharmalingam, Mithuss Ludwig, Tim Yuan, H. Y. Karwacki, Lukasz Verstraten, Robin C. Duine, Rembert |
| contents | Spin dynamics is usually described as massless or, more precisely, as free of inertia. Recent experiments, however, found direct evidence for inertial spin dynamics. In turn, it is necessary to rethink the basics of spin dynamics. Focusing on a macrospin in an environment (bath), we show that the spin-to-bath coupling gives rise to spin inertia. This bath-induced spin inertia appears universally from all the high-frequency bath modes. We expect our results to provide new insights into recent experiments on spin inertia. Moreover, they indicate that any channel for spin dissipation should also be accompanied by a term accounting for bath-induced spin inertia. As an illustrative example, we consider phonon-bath-induced spin inertia in a YIG/GGG stack. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_05621 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Bath-induced spin inertia Quarenta, Mario Gaspar Tharmalingam, Mithuss Ludwig, Tim Yuan, H. Y. Karwacki, Lukasz Verstraten, Robin C. Duine, Rembert Mesoscale and Nanoscale Physics Other Condensed Matter Spin dynamics is usually described as massless or, more precisely, as free of inertia. Recent experiments, however, found direct evidence for inertial spin dynamics. In turn, it is necessary to rethink the basics of spin dynamics. Focusing on a macrospin in an environment (bath), we show that the spin-to-bath coupling gives rise to spin inertia. This bath-induced spin inertia appears universally from all the high-frequency bath modes. We expect our results to provide new insights into recent experiments on spin inertia. Moreover, they indicate that any channel for spin dissipation should also be accompanied by a term accounting for bath-induced spin inertia. As an illustrative example, we consider phonon-bath-induced spin inertia in a YIG/GGG stack. |
| title | Bath-induced spin inertia |
| topic | Mesoscale and Nanoscale Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2310.05621 |