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Title: Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets

Here, 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.
Authors:
 [1] ;  [1]
  1. Univ. of Nebraska, Lincoln, NE (United States)
Publication Date:
Grant/Contract Number:
SC0014189
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 16; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1253327
Alternate Identifier(s):
OSTI ID: 1246754

Kovalev, Alexey A., and Zyuzin, Vladimir. Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets. United States: N. p., Web. doi:10.1103/PhysRevB.93.161106.
Kovalev, Alexey A., & Zyuzin, Vladimir. Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets. United States. doi:10.1103/PhysRevB.93.161106.
Kovalev, Alexey A., and Zyuzin, Vladimir. 2016. "Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets". United States. doi:10.1103/PhysRevB.93.161106. https://www.osti.gov/servlets/purl/1253327.
@article{osti_1253327,
title = {Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets},
author = {Kovalev, Alexey A. and Zyuzin, Vladimir},
abstractNote = {Here, 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.},
doi = {10.1103/PhysRevB.93.161106},
journal = {Physical Review B},
number = 16,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}