Implementation of a non-equilibrium Green's function method to calculate spin transfer torque

Abstract

We present an implementation of the steady state Keldysh approach in a Green's function multiple scattering scheme to calculate the non-equilibrium spin density. This density is used to obtain the spin transfer torque in junctions showing the magnetoresistance effect. We use our implementation to study the spin transfer torque in metallic Co/Cu/Co junctions.

4 pages, 4 figures

References in corpus (2)

• A selfconsistent theory of current-induced switching of magnetization
• Current Induced Order Parameter Dynamics: Microscopic Theory Applied to Co/Cu/Co spin valves

Cited by in corpus (23)

• Seebeck Effect in Magnetic Tunnel Junctions
• Ab initio studies of the spin-transfer torque in tunnel junctions
• Spin caloritronics in magnetic tunnel junctions: Ab initio studies
• Theory of Nonequilibrium Spin Transport and Spin Transfer Torque in Superconducting-Ferromagnetic Nanostructures
• Spin and charge pumping in magnetic tunnel junctions with precessing magnetization: A nonequilibrium Green function approach
• Bias dependence of magnetic exchange interactions: application to interlayer exchange coupling in spin valves
• Parameter space for thermal spin-transfer torque
• Field- and damping-like spin-transfer torque in magnetic multilayers
• Ab initio studies of the tunneling magneto-Seebeck effect: influence of magnetic material
• First-principles quantum transport modeling of spin-transfer and spin-orbit torques in magnetic multilayers
• How to construct the proper gauge-invariant density matrix in steady-state nonequilibrium: Applications to spin-transfer and spin-orbit torques
• Influence of the magnetic material on tunneling magnetoresistance and spin-transfer torque in tunnel junctions: Ab initio studies
• Spin-orbit-coupling induced torque in ballistic domain walls: equivalence of charge-pumping and nonequilibrium magnetization formalisms
• Thermal spin-transfer torque in magnetic tunnel junctions
• Spin-orbit torques and tunable Dzyaloshinskii-Moriya interaction in Co/Cu/Co trilayers
• Implementation of non-equilibrium vertex corrections in KKR: transport through disordered layers
• Skyrmion meets magnetic tunnel junction: an efficient way for electrical skyrmion detection investigated by ab initio theory
• Landauer theory of ballistic torkances in non-collinear spin valves
• Spin-torque generation by dc or ac voltages in magnetic layered structures
• Spin accumulation from non-equilibrium first principles methods
• Spin transfer torque enhancement in dual spin valve in the ballistic regime
• First principles calculations of steady-state voltage-controlled magnetism: application to x-ray absorption spectroscopy experiment
• Adiabatic quantum pumping, magnification effects and quantum size effects of spin-torque in magnetic tunnel junctions