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Proceedings Paper

Torque, spin and energy currents in chiral magnets (Conference Presentation)
Author(s): Alexey Kovalev

Paper Abstract

We predict that a temperature gradient can induce a magnon-mediated intrinsic torque and a transverse spin current in ferromagnets 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. In addition to the torque and spin current, we also identify the mechanical torque effect in accordance with the conservation of angular momentum. 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.

Paper Details

Date Published: 6 December 2016
PDF: 1 pages
Proc. SPIE 9931, Spintronics IX, 99313Q (6 December 2016); doi: 10.1117/12.2230977
Show Author Affiliations
Alexey Kovalev, Univ. of Nebraska-Lincoln (United States)

Published in SPIE Proceedings Vol. 9931:
Spintronics IX
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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