Spin pumping of two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interactions

We theoretically consider spin pumping in a junction between a ferromagnetic insulator (FI) and a two-dimensional electron gas (2DEG) in which the Rashba and Dresselhaus spin-orbit interactions coexist. Using second-order perturbation theory, we derive an increase in linewidth in the case of an inte...

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Published in:Physical review. B 2021-08, Vol.104 (5), p.1, Article 054410
Main Authors: Yama, M., Tatsuno, M., Kato, T., Matsuo, M.
Format: Article
Language:English
Subjects:
Damping
Electron gas
Electron spin
Fermi surfaces
Ferromagnetic resonance
Ferromagnetism
Perturbation theory
Pumping
Resonant frequencies
Spin-orbit interactions
Surface layers
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description We theoretically consider spin pumping in a junction between a ferromagnetic insulator (FI) and a two-dimensional electron gas (2DEG) in which the Rashba and Dresselhaus spin-orbit interactions coexist. Using second-order perturbation theory, we derive an increase in linewidth in the case of an interfacial exchange coupling in a ferromagnetic resonance (FMR) experiment. We clarify how the enhancement of Gilbert damping depends on the resonant frequency and spin orientation of the FI. We show that this setup of an FMR experiment can provide information on the spin texture of 2DEG at the Fermi surface.
doi_str_mv 10.1103/PhysRevB.104.054410
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Damping
Electron gas
Electron spin
Fermi surfaces
Ferromagnetic resonance
Ferromagnetism
Perturbation theory
Pumping
Resonant frequencies
Spin-orbit interactions
Surface layers
title Spin pumping of two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interactions
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