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Title: Magnonic analog of the Edelstein effect in antiferromagnetic insulators

Abstract

Here we investigate the nonequilibrium spin polarization due to a temperature gradient in antiferromagnetic insulators, which is the magnonic analog of the inverse spin-galvanic effect of electrons. We derive a linear-response theory of a temperature-gradient-induced spin polarization for collinear and noncollinear antiferromagnets, which comprises both extrinsic and intrinsic contributions. We apply our theory to several noncentrosymmetric antiferromagnetic insulators, i.e., to a one-dimensional antiferromagnetic spin chain, a single layer of kagome noncollinear antiferromagnet, e.g., KFe 3 ( OH ) 6 ( SO 4 ) 2 , and a noncollinear breathing pyrochlore antiferromagnet, e.g., LiGaCr 4 O 8 . The shapes of our numerically evaluated response tensors agree with those implied by the magnetic symmetry. Furthermore, assuming a realistic temperature gradient of 10 K/mm , we find two-dimensional spin densities of up to ~ 10 6 / cm 2 and three-dimensional bulk spin densities of up to ~ 10 14 / cm 3 , encouraging an experimental detection

Authors:
ORCiD logo [1];  [2];  [1];  [1]
  1. Univ. of Nebraska, Lincoln, NE (United States)
  2. Martin-Luther-University Halle-Wittenberg (MLU) (Germany); Univ. of Basel (Switzerland)
Publication Date:
Research Org.:
Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1596690
Grant/Contract Number:  
[SC0014189]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
[ Journal Volume: 101; Journal Issue: 2]; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; Antiferromagnetism; Magnetism; Magnons; Micromagnetism; Spintronics; Thermoelectric effects

Citation Formats

Li, Bo, Mook, Alexander, Raeliarijaona, Aldo, and Kovalev, Alexey A. Magnonic analog of the Edelstein effect in antiferromagnetic insulators. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.024427.
Li, Bo, Mook, Alexander, Raeliarijaona, Aldo, & Kovalev, Alexey A. Magnonic analog of the Edelstein effect in antiferromagnetic insulators. United States. doi:10.1103/PhysRevB.101.024427.
Li, Bo, Mook, Alexander, Raeliarijaona, Aldo, and Kovalev, Alexey A. Fri . "Magnonic analog of the Edelstein effect in antiferromagnetic insulators". United States. doi:10.1103/PhysRevB.101.024427.
@article{osti_1596690,
title = {Magnonic analog of the Edelstein effect in antiferromagnetic insulators},
author = {Li, Bo and Mook, Alexander and Raeliarijaona, Aldo and Kovalev, Alexey A.},
abstractNote = {Here we investigate the nonequilibrium spin polarization due to a temperature gradient in antiferromagnetic insulators, which is the magnonic analog of the inverse spin-galvanic effect of electrons. We derive a linear-response theory of a temperature-gradient-induced spin polarization for collinear and noncollinear antiferromagnets, which comprises both extrinsic and intrinsic contributions. We apply our theory to several noncentrosymmetric antiferromagnetic insulators, i.e., to a one-dimensional antiferromagnetic spin chain, a single layer of kagome noncollinear antiferromagnet, e.g., KFe3(OH)6(SO4)2, and a noncollinear breathing pyrochlore antiferromagnet, e.g., LiGaCr4O8. The shapes of our numerically evaluated response tensors agree with those implied by the magnetic symmetry. Furthermore, assuming a realistic temperature gradient of 10K/mm, we find two-dimensional spin densities of up to ~106ℏ/cm2 and three-dimensional bulk spin densities of up to ~1014ℏ/cm3, encouraging an experimental detection},
doi = {10.1103/PhysRevB.101.024427},
journal = {Physical Review B},
number = [2],
volume = [101],
place = {United States},
year = {2020},
month = {1}
}

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