Dynamic Landau-Lifshitz-Bloch-Slonczewski equations for spintronics
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911463633846272 |
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| author | Thibaudeau, Pascal Fattouhi, Mouad Buda-Prejbeanu, Liliana D. |
| author_facet | Thibaudeau, Pascal Fattouhi, Mouad Buda-Prejbeanu, Liliana D. |
| contents | The atomistic Landau-Lifshitz-Gilbert equation is challenged when modeling spintronic devices where Joule heating is significant, due to its core assumption of a constant magnetization magnitude. Based on a statistical framework that treats the magnetization magnitude as a dynamic variable coupled to a thermal bath, we derive a dynamic Landau-Lifshitz-Bloch-Slonczewski set of equations for torques, that captures the transient, heating-induced demagnetization that occurs during high-current operation. Integrating these dynamic equations and comparing them to their stochastic equivalents reveals that both the energy landscape and switching dynamics in high-anisotropy systems are similarly modified. This approach yields accurate and accelerated predictions of critical currents and switching times. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_04562 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dynamic Landau-Lifshitz-Bloch-Slonczewski equations for spintronics Thibaudeau, Pascal Fattouhi, Mouad Buda-Prejbeanu, Liliana D. Mesoscale and Nanoscale Physics Materials Science Computational Physics The atomistic Landau-Lifshitz-Gilbert equation is challenged when modeling spintronic devices where Joule heating is significant, due to its core assumption of a constant magnetization magnitude. Based on a statistical framework that treats the magnetization magnitude as a dynamic variable coupled to a thermal bath, we derive a dynamic Landau-Lifshitz-Bloch-Slonczewski set of equations for torques, that captures the transient, heating-induced demagnetization that occurs during high-current operation. Integrating these dynamic equations and comparing them to their stochastic equivalents reveals that both the energy landscape and switching dynamics in high-anisotropy systems are similarly modified. This approach yields accurate and accelerated predictions of critical currents and switching times. |
| title | Dynamic Landau-Lifshitz-Bloch-Slonczewski equations for spintronics |
| topic | Mesoscale and Nanoscale Physics Materials Science Computational Physics |
| url | https://arxiv.org/abs/2510.04562 |