Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.013079 |
| _version_ | 1797211528265465856 |
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| author | Bo Li Shane Sandhoefner Alexey A. Kovalev |
| author_facet | Bo Li Shane Sandhoefner Alexey A. Kovalev |
| author_sort | Bo Li |
| collection | DOAJ |
| description | 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 KFe_{3}(OH)_{6}(SO_{4})_{2} and predict a measurable spin current response. |
| first_indexed | 2024-04-24T10:27:55Z |
| format | Article |
| id | doaj.art-521479920ccd494e96c720eb6164c034 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:27:55Z |
| publishDate | 2020-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-521479920ccd494e96c720eb6164c0342024-04-12T16:49:06ZengAmerican Physical SocietyPhysical Review Research2643-15642020-01-012101307910.1103/PhysRevResearch.2.013079Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnetBo LiShane SandhoefnerAlexey A. KovalevWe 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 KFe_{3}(OH)_{6}(SO_{4})_{2} and predict a measurable spin current response.http://doi.org/10.1103/PhysRevResearch.2.013079 |
| spellingShingle | Bo Li Shane Sandhoefner Alexey A. Kovalev Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet Physical Review Research |
| title | Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet |
| title_full | Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet |
| title_fullStr | Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet |
| title_full_unstemmed | Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet |
| title_short | Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet |
| title_sort | intrinsic spin nernst effect of magnons in a noncollinear antiferromagnet |
| url | http://doi.org/10.1103/PhysRevResearch.2.013079 |
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