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arXiv · 2505.05977

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

Reza Fazeli Mehrabani·Babak Abdollahipour·Hakimeh Mohammadpour·Arash Phirouznia
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Abstract

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.

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Reza Fazeli Mehrabani, Babak Abdollahipour, Hakimeh Mohammadpour, Arash Phirouznia. 2025-05-09. 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. https://arxiv.org/abs/2505.05977

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