Research Papers in Physics and Astronomy

 

Date of this Version

2016

Citation

Phys. Rev. B 93, 161106(R) (2016)
DOI: 10.1103/PhysRevB.93.161106

Comments

©2016 American Physical Society. Used by permission.

Abstract

We predict that a temperature gradient can induce a magnon-mediated intrinsic torque in systems with a nontrivial 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 the linear response theory to the magnon-mediated spin Nernst and torque responses in a kagome lattice ferromagnet.

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