Interaction Between a Domain Wall and Spin Supercurrent in Easy-cone Magnets

Se Kwon Kim; Yaroslav Tserkovnyak

doi:10.1103/physrevb.94.220404

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arXiv · 1610.00034

Interaction Between a Domain Wall and Spin Supercurrent in Easy-cone Magnets

Se Kwon Kim·Yaroslav Tserkovnyak

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Abstract

A domain wall and spin supercurrent can coexist in magnets with easy-cone anisotropy owing to simultaneous spontaneous breaking of Z$_2$ and U(1) symmetries. Their interaction is theoretically investigated in quasi one-dimensional ferromagnets within the Landau-Lifshitz-Gilbert phenomenology. Specifically, we show that spin supercurrent can exert the torque on a domain wall and thereby drive it. We also show, as a reciprocal phenomenon, a field-induced motion of a domain wall can generate spin supercurrent.

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Se Kwon Kim, Yaroslav Tserkovnyak. 2016-09-30. Interaction Between a Domain Wall and Spin Supercurrent in Easy-cone Magnets. https://doi.org/10.1103/physrevb.94.220404

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