Effects of screened Coulomb interaction on spin transfer torque

Abstract

In a magnetic multilayer, magnetizations can be manipulated by spin transfer torque. Both spin transfer torque and its reciprocal effect, spin pumping, are governed by spin mixing conductance. The magnitude of spin mixing conductance at the interface of nearly magnetic metal has been theoretically shown to be enhanced by electron-electron interaction. However, experiments show both increasing and decreasing values of spin mixing conductance for metals with larger electron-electron interaction. Here we take into account the effect of electron-electron interaction on the screening of the Coulomb interaction at the magnetic interface to correctly describe the experiment.

5 pages, 3 figures

References in corpus (6)

• Theory of magnon-driven spin Seebeck effect
• Spin-transfer torque in magnetic tunnel junctions: Scattering theory
• Giant spin accumulation in silicon nonlocal spin-transport devices
• Crystal field effects on spin pumping
• Cubic interaction parameters for t2g Wannier orbitals
• Yukawa potential for realistic prediction of Hubbard and Hund interaction parameters for transition metals

Cited by in corpus (7)

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• Effect of interfacial spin mixing conductance on gyromagnetic ratio of Gd substituted Y${}_3$Fe${}_5$O${}_{12}$
• Antiferromagnetic spin pumping via hyperfine interaction
• Electrically controllable exchange bias via interface magnetoelectric effect
• Enhancement of spin mixing conductance by $s$-$d$ orbital hybridization in heavy metals
• Enhancement of thermal spin pumping by orbital angular momentum of rare earth iron garnet
• Spin-orbit torque on nuclear spins exerted by a spin accumulation via hyperfine interactions