Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets

Article

关键词: WEAK FERROMAGNETISM;    CALORITRONICS;    MAGNETIZATION;    INSULATOR;    DYNAMICS;   

DOI  :  10.1103/PhysRevB.93.161106

来源: SCIE

【 摘 要 】

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.

【 授权许可】

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