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Gilbert damping in ...
Gilbert damping in two-dimensional metallic antiferromagnets
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- Sokolewicz, R. J. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands.;Qblox, Delftechpk 22, NL-2628 XH Delft, Netherlands.
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- Baglai, M. (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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- Ado, I. A. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands.
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- Katsnelson, M. I. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands.
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- Titov, M. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands.
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Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands;Qblox, Delftechpk 22, NL-2628 XH Delft, Netherlands. Institutionen för fysik och astronomi (creator_code:org_t)
- American Physical Society, 2024
- 2024
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 109:13
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A finite spin life-time of conduction electrons may dominate Gilbert damping of two-dimensional metallic antiferromagnets or antiferromagnet / metal heterostructures. We investigate the Gilbert damping tensor for a typical low-energy model of a metallic antiferromagnet system with honeycomb magnetic lattice and Rashba spinorbit coupling for conduction electrons. We distinguish three regimes of spin relaxation: exchange-dominated relaxation for weak spin -orbit coupling strength, Elliot-Yafet relaxation for moderate spin -orbit coupling, and Dyakonov-Perel relaxation for strong spin -orbit coupling. We show, however, that the latter regime takes place only for the in -plane Gilbert damping component. We also show that anisotropy of Gilbert damping persists for any finite spin -orbit interaction strength provided we consider no spatial variation of the N & eacute;el vector. Isotropic Gilbert damping is restored only if the electron spin -orbit length is larger than the magnon wavelength. Our theory applies to MnPS 3 monolayer on Pt or to similar systems.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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