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arXiv · 2306.17383

Spin Swapping for an Exchange Magnon Spin Current

Shuting Cui·Peng Yan·Wei Luo·Xiaofei Yang·Yue Zhang
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Abstract

We propose the spin swapping effect for an exchange magnon spin current in a perpendicularly magnetized ferromagnetic medium with in plane anisotropy on the surface. The excitation of a magnon current flowing along an in-plane direction with an out-of-plane spin polarization leads to the generation of a secondary exchange spin current propagating along the out-of-plane direction, characterized by an in-plane spin polarization. The resulting exchange magnon spin current can induce an inverse spin Hall voltage of micro-volts. The exchange coupling at the interface between regions with different magnetic anisotropies plays a crucial role in generating the spin swapping effect. This is in contrast to the recently reported spin swapping for an exchange spin current in a canted antiferromagnet due to the Dzyaloshiskii-Moriya interaction.

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Shuting Cui, Peng Yan, Wei Luo, Xiaofei Yang, Yue Zhang. 2023-06-30. Spin Swapping for an Exchange Magnon Spin Current. https://arxiv.org/abs/2306.17383

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