Quantum kinetic equations and anomalous non-equilibrium Cooper pair spin accumulation in Rashba wires with Zeeman splitting

摘要

We derive the theoretical and numerical framework for investigatingnonequilibrium properties of spin-orbit coupled wires with Zeeman splittingproximized by a superconductor in the non-linear diffusive regime. Wedemonstrate that the anisotropic behaviour of triplet Cooper pairs in thissystem leads to novel spin accumulation profiles tunable by the magnetic fieldand strength of applied voltage bias. This paves the way for enhancedmanipulation of superconducting spintronic devices, and enables furtherinvestigation of nonequilibrium effects in proximity-coupled superconductingstructures more generally.