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arXiv · 2107.03001

Fluctuation theorem for spin transport at insulating ferromagnetic junctions

Tetsuya Sato·Masahiro Tatsuno·Mamoru Matsuo·Takeo Kato
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Abstract

General relations for nonequilibrium spin transport at a magnetic junction between a normal metal and a ferromagnetic insulator are derived from the quantum fluctuation theorem. They include the extended Onsager relations between the spin conductance and the spin-current noise that hold for nonequilibrium states driven by an external current. These relations, that are valid for a general setup of spin Hall magnetoresistance, provide a comprehensive viewpoint for understanding of unidirectional spin Hall magnetoresistance in insulating ferromagnetic junctions.

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Tetsuya Sato, Masahiro Tatsuno, Mamoru Matsuo, Takeo Kato. 2021-07-07. Fluctuation theorem for spin transport at insulating ferromagnetic junctions. https://doi.org/10.1016/j.jmmm.2021.168814

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