Nonequilibrium spin-transfer torque in SFNFS junctions
Erhai Zhao, J. A. Sauls
TL;DR
This paper provides a theoretical analysis of nonequilibrium spin currents and spin-transfer torque in voltage-biased SFNFS Josephson junctions, exploring their subharmonic gap structures and high-voltage behaviors.
Contribution
It introduces a detailed theoretical framework for understanding spin-transfer phenomena in SFNFS junctions under nonequilibrium conditions.
Findings
Identification of subharmonic gap structures in spin currents
Analysis of high-voltage asymptotic behaviors
Relation of spin currents to spin-dependent inelastic scattering
Abstract
We report theoretical results for the nonequilibrium spin current and spin-transfer torque in voltage-biased SFNFS Josephson structures. The subharmonic gap structures and high voltage asymptotic behaviors of the dc and ac components of the spin current are analyzed and related to the spin-dependent inelastic scattering of quasiparticles at both F layers.
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