Spin-charge coupled dynamics driven by a time-dependent magnetization

Abstract

The spin-charge coupled dynamics in a thin, magnetized metallic system are investigated. The effective driving force acting on the charge carriers is generated by a dynamical magnetic texture, which can be induced, e.g., by a magnetic material in contact with a normal-metal system. We consider a general inversion-asymmetric substrate/normal-metal/magnet structure, which, by specifying the precise nature of each layer, can mimick various experimentally employed setups. Inversion symmetry breaking gives rise to an effective Rashba spin-orbit interaction. We derive general spin-charge kinetic equations which show that such spin-orbit interaction, together with anisotropic Elliott-Yafet spin relaxation, yields significant corrections to the magnetization-induced dynamics. In particular, we present a consistent treatment of the spin density and spin current contributions to the equations of motion, inter alia identifying a novel term in the effective force which appears due to a spin current polarized parallel to the magnetization. This "inverse spin filter" contribution depends markedly on the parameter which describes the anisotropy in spin relaxation. To further highlight the physical meaning of the different contributions, the spin pumping configuration of typical experimental setups is analyzed in detail. In the two-dimensional limit the build-up of a DC voltage is dominated by the spin galvanic (inverse Edelstein) effect. A measuring scheme that could isolate this contribution is discussed.

12 pages, 5 figures

References in corpus (37)

• Spintronics: Fundamentals and applications
• Spin torque switching with the giant spin Hall effect of tantalum
• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
• Direct electronic measurement of the spin Hall effect
• Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
• Nonlocal magnetization dynamics in ferromagnetic heterostructures
• Room Temperature Reversible Spin Hall Effect
• Giant Spin-splitting in the Bi/Ag(111) Surface Alloy
• Detection and quantification of inverse spin Hall effect from spin pumping in permalloy/normal metal bilayers
• Comparative Measurements of Inverse Spin Hall and Magnetoresistance in YIG|Pt and YIG|Ta
• Current induced torques and interfacial spin-orbit coupling: Semiclassical Modeling
• Inverse Edelstein Effect
• Spin Transport at Interfaces with Spin-Orbit Coupling: Phenomenology
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Evolution of the spin Hall effect in Pt nanowires: Size and temperature effects
• Spin Transport at Interfaces with Spin-Orbit Coupling: Formalism
• Fieldlike and antidamping spin-orbit torques in as-grown and annealed Ta/CoFeB/MgO layers
• Quantum Kinetic Theory of Current-Induced Torques in Rashba Ferromagnets
• A self-consistent treatment of non-equilibrium spin torques in magnetic multilayers
• Electron Transport Driven by Nonequilibrium Magnetic Textures
• Inverse Spin Hall Effect in NiFe / Normal Metal Bilayers
• Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets
• Spin pumping by a field-driven domain wall
• Quasiclassical approach to the spin-Hall effect in the two-dimensional electron gas
• Spin-orbit interaction in a two-dimensional electron gas: a SU(2) formulation
• Non-Abelian gauge fields in the gradient expansion: generalized Boltzmann and Eilenberger equations
• Anomalous Nernst and Hall effects in magnetized platinum and palladium
• Phenomenology of current-skyrmion interactions in thin films with perpendicular magnetic anisotropy
• Spin motive force induced by Rashba interaction in the strong sd coupling regime
• Tuning the Spin Hall Effect in a Two-Dimensional Electron Gas
• Magnetic control of spin-orbit fields: a first-principles study of Fe/GaAs junctions
• Inverse Spin Hall Effect and Anomalous Hall Effect in a Two-Dimensional Electron Gas
• Spin-Hall Conductivity and Electric Polarization in Metallic Thin Films
• Spinmotive force with static and uniform magnetization induced by a time-varying electric field
• Spin-orbit torques for current parallel and perpendicular to a domain wall
• Room temperature spin thermoelectrics in metallic films

Cited by in corpus (10)

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Theory of current-induced spin polarizations in an electron gas
• Transmission Line Model for Materials with Spin-Momentum Locking
• Theory of inverse Rashba-Edelstein effect induced by spin pumping into a two-dimensional electron gas
• Quasiclassical theory of the spin-orbit magnetoresistance of three-dimensional Rashba metals
• Theory of the inverse Rashba-Edelstein effect induced by thermal spin injection
• Spin Pumping into two-dimensional systems
• Tunneling anisotropic spin galvanic effect
• Spin Hall magnetoresistance and spin Nernst magnetothermopower: role of the inverse spin galvanic effect
• The spin Hall effect