Generation of non-equilibrium spin-motive force at the surface of a topological insulator induced by current-driven domain wall motion in the magnetic substrate
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909605956681728 |
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| author | Mehrabani, Reza Fazeli Abdollahipour, Babak Mohammadpour, Hakimeh Phirouznia, Arash |
| author_facet | Mehrabani, Reza Fazeli Abdollahipour, Babak Mohammadpour, Hakimeh Phirouznia, Arash |
| contents | The generalized Faraday method can be used for computation of spin-motive force (SMF) within the unitary transformation approach. Meanwhile, the unitary transformation approach, which could be employed to obtain an effective collinear exchange interaction of non-collinear magnetic structures, cannot be used when the other parts of the Hamiltonian contain spin-dependent couplings. In the current study, the method of unitary transformation has been generalized to systems with spin-momentum coupling. In this way, the SMF at topological insulator surfaces has been computed analytically. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_05977 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Generation of non-equilibrium spin-motive force at the surface of a topological insulator induced by current-driven domain wall motion in the magnetic substrate Mehrabani, Reza Fazeli Abdollahipour, Babak Mohammadpour, Hakimeh Phirouznia, Arash Mesoscale and Nanoscale Physics The generalized Faraday method can be used for computation of spin-motive force (SMF) within the unitary transformation approach. Meanwhile, the unitary transformation approach, which could be employed to obtain an effective collinear exchange interaction of non-collinear magnetic structures, cannot be used when the other parts of the Hamiltonian contain spin-dependent couplings. In the current study, the method of unitary transformation has been generalized to systems with spin-momentum coupling. In this way, the SMF at topological insulator surfaces has been computed analytically. |
| title | Generation of non-equilibrium spin-motive force at the surface of a topological insulator induced by current-driven domain wall motion in the magnetic substrate |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.05977 |