Physics and Astronomy, Department of
Department of Physics and Astronomy: Faculty Publications
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ORCID IDs
Bo Li https://orcid.org/0000-0002-5713-1592
S. Sandhoefner https://orcid.org/0000-0003-4238-7277
Document Type
Article
Date of this Version
2020
Citation
PHYSICAL REVIEW RESEARCH 2, 013079 (2020)
DOI: 10.1103/PhysRevResearch.2.013079
Abstract
We investigate the intrinsic magnon spin current in a noncollinear antiferromagnetic insulator. We introduce a definition of the magnon spin current in a noncollinear antiferromagnet and find that it is in general nonconserved, but for certain symmetries and spin polarizations the averaged effect of nonconserving terms can vanish. We formulate a general linear response theory for magnons in noncollinear antiferromagnets subject to a temperature gradient and analyze the effect of symmetries on the response tensor. We apply this theory to single-layer potassium iron jarosite KFe3(OH)6(SO4)2 and predict a measurable spin current response.
Comments
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.