Effect of vertex corrections on the enhancement of Gilbert damping in spin pumping into a two-dimensional electron gas

Abstract

We theoretically consider the effect of vertex correction on spin pumping from a ferromagnetic insulator (FI) into a two-dimensional electron gas (2DEG) in which the Rashba and Dresselhaus spin-orbit interactions coexist. The Gilbert damping in the FI is enhanced by elastic spin-flipping or magnon absorption. We show that the Gilbert damping due to elastic spin-flipping is strongly enhanced by the vertex correction when the ratio of the two spin-orbit interactions is near a special value at which the spin relaxation time diverges while that due to magnon absorption shows only small modification. We also show that the shift in the resonant frequency due to elastic spin-flipping is strongly enhanced in a similar way as the Gilbert damping.

16 pages, 11 figures

References in corpus (19)

• Dissipationless Quantum Spin Current at Room Temperature
• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Emergence of the persistent spin helix in semiconductor quantum wells
• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• On A Proper Definition of Spin Current
• Absence of vertex correction for the spin Hall effect in p-type semiconductors
• Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc
• Direct determination of spin orbit interaction coefficients and realization of the persistent spin helix symmetry
• Non-diffusive spin dynamics in a two-dimensional electron gas
• Spin current noise of the spin Seebeck effect and spin pumping
• Microscopic theory of spin transport at the interface between the superconductor and a ferromagnetic insulator
• Theory of conserved spin current and its application to two dimensional hole gas
• Magnon-phonon relaxation in yttrium iron garnet from first principles
• Large spin-to-charge conversion at the two-dimensional interface of transition metal dichalcogenides and permalloy
• Spin accumulation without spin current
• Anisotropic superconducting spin transport at magnetic interfaces
• Ferromagnetic resonance modulation in $d$-wave superconductor/ferromagnetic insulator bilayer systems
• Spin pumping of two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interactions
• Spin current at a magnetic junction as a probe of the Kondo state

Cited by in corpus (8)

• Theory of inverse Rashba-Edelstein effect induced by spin pumping into a two-dimensional electron gas
• Spin Seebeck Effect in Graphene
• Theory of the inverse Rashba-Edelstein effect induced by thermal spin injection
• Spin Pumping into two-dimensional systems
• Theory of spin pumping and inverse Rashba-Edelstein effect in a two-dimensional electron gas
• Spin pumping into quantum spin chains
• Microscopic theory of Rashba-Edelstein magnetoresistance
• Optical-vortex-pulse induced nonequilibrium spin textures in spin-orbit coupled electrons