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

## TL;DR

This paper develops a theoretical and numerical framework to study nonequilibrium spin accumulation in Rashba wires with Zeeman splitting, revealing tunable anisotropic triplet Cooper pair behavior for superconducting spintronics.

## Contribution

It introduces a new approach to analyze non-equilibrium properties of spin-orbit coupled superconducting wires with Zeeman splitting, highlighting the tunable anisotropic triplet Cooper pair effects.

## Key findings

- Anisotropic triplet Cooper pairs cause novel spin accumulation profiles.
- Spin accumulation can be controlled by magnetic field and voltage bias.
- Framework enables further exploration of nonequilibrium superconducting phenomena.

## Abstract

We derive the theoretical and numerical framework for investigating nonequilibrium properties of spin-orbit coupled wires with Zeeman splitting proximized by a superconductor in the non-linear diffusive regime. We demonstrate that the anisotropic behaviour of triplet Cooper pairs in this system leads to novel spin accumulation profiles tunable by the magnetic field and strength of applied voltage bias. This paves the way for enhanced manipulation of superconducting spintronic devices, and enables further investigation of nonequilibrium effects in proximity-coupled superconducting structures more generally.