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arXiv · 1509.05847

Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets

Alexey A. Kovalev·Vladimir Zyuzin
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Abstract

We predict that a temperature gradient can induce a magnon-mediated intrinsic torque and a transverse spin current in systems with non-trivial magnon Berry curvature. With the help of a microscopic linear response theory of nonequilibrium magnon-mediated torques and spin currents we identify the interband and intraband components that manifest in ferromagnets with Dzyaloshinskii-Moriya interactions and magnetic textures. To illustrate and assess the importance of such effects, we apply our theory to the magnon-mediated spin Nernst and torque responses in a kagome lattice ferromagnet.

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Alexey A. Kovalev, Vladimir Zyuzin. 2015-09-19. Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets. https://doi.org/10.1103/physrevb.93.161106

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