Consistent microscopic analysis of spin pumping effects
arXiv:1706.01185 · doi:10.1103/PhysRevB.96.064423
Abstract
We present a consistent microscopic study of spin pumping effects for both metallic and insulating ferromagnets. As for metallic case, we present a simple quantum mechanical picture of the effect as due to the electron spin flip as a result of a nonadiabatic (off-diagonal) spin gauge field. The effect of interface spin-orbit interaction is briefly discussed. We also carry out field-theoretic calculation to discuss on the equal footing the spin current generation and torque effects such as enhanced Gilbert damping constant and shift of precession frequency both in metallic and insulating cases. For thick ferromagnetic metal, our study reproduces results of previous theories such as the correspondence between the dc component of the spin current and enhancement of the damping. For thin metal and insulator, the relation turns out to be modified. For the insulating case, driven locally by interface exchange interaction due to magnetic proximity effect, physical mechanism is distinct from the metallic case. Further study of proximity effect and interface spin-orbit interaction would be crucial to interpret experimental results in particular for insulators.
References in corpus (32)
- Enhanced Gilbert Damping in Thin Ferromagnetic Films
- Theory of Current-Driven Domain Wall Motion: A Poorman's Approach
- Scattering approach to parametric pumping
- Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
- Scaling of spin Hall angle in 3d, 4d and 5d metals from Y3Fe5O12/metal spin pumping
- Microscopic approach to current-driven domain wall dynamics
- Linear-response theory of spin Seebeck effect in ferromagnetic insulators
- Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
- Spin Torques in Ferromagnetic/Normal Metal Structures
- First-principles study of magnetization relaxation enhancement and spin-transfer in thin magnetic films
- Spin transfer torque on magnetic insulators
- Interface enhancement of Gilbert damping from first-principles
- Microscopic Calculation of Spin Torques in Disordered Ferromagnets
- Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
- Spin mixing conductance at a well-controlled platinum/yttrium iron garnet interface
- Gilbert Damping in Magnetic Multilayers
- Macroscopic Quantum Tunneling of a Domain Wall in a Ferromagnetic Metal
- Spin torque and force due to current for general spin textures
- Enhancement of Pure Spin Currents in Spin Pumping Y3Fe5O12/Cu/metal Trilayers through Spin Conductance Matching
- Berry phase of magnons in textured ferromagnets
- Permanent current from non-commutative spin algebra
- Current-induced noise and damping in non-uniform ferromagnets
- Gilbert damping in noncollinear ferromagnets
- Macroscopic Quantum Tunneling and Dissipation of Domain Wall in Ferromagnetic Metals
- Charge and Spin Currents Generated by Dynamical Spins
- Calculation of current-induced torque from spin continuity equation
- Thermal vector potential theory of magnon-driven magnetization dynamics
- Effects of Domain Wall on Electronic Transport Properties in Mesoscopic Wire of Metallic Ferromagnets
- Domain Wall Resistance based on Landauer's Formula
- Influence of nonlocal damping on the field-driven domain wall motion
- Magnon Pumping by a Time-Dependent Transverse Magnetic Field in Ferromagnetic Insulators
- Green's function representation of spin pumping effect
Cited by in corpus (15)
- Effective gauge field theory of spintronics
- Experimental Evidence of Non-Negligible Imaginary Part of Spin Mixing Conductance and Its Impact on Magnetization Dynamics in Heavy-Metal|Ferromagnet Bilayers
- Spin correlation function theory of spin-charge conversion effects
- Magnon versus electron mediated spin-transfer torque exerted by spin currents across antiferromagnetic insulator to switch magnetization of adjacent ferromagnetic metal
- Anisotropic superconducting spin transport at magnetic interfaces
- Quantum Oscillations of Gilbert Damping in Ferromagnetic/Graphene Bilayer Systems
- Spin mixing conductance and spin magnetoresistance of iridate/manganite interface
- Multi-Particle Tunneling Transport at Strongly-Correlated Interfaces
- Pseudo Electric Field and Pumping Valley Current in Graphene Nano-bubbles
- Spin backflow: a non-Markovian effect on spin pumping
- Nonadiabaticity in spin pumping under relaxation
- Emission of electromagnetic radiation due to spin-flip transitions in a ferromagnet
- Finite-frequency spin conductance of a ferro-/ferrimagnetic-insulator|normal-metal interface
- Alternating Current-induced Interfacial Spin-transfer Torque
- A Microscopic Explanation of Microwave Spin Pumping