Spin-Wave Relaxation in a Quantum Hall Ferromagnet

TL;DR

This paper investigates the mechanisms of spin wave relaxation in quantum Hall ferromagnets, emphasizing the roles of spin-orbit coupling and random potentials in energy dissipation and irreversibility.

Contribution

It introduces a detailed analysis of spin relaxation processes considering spin-orbit coupling and disorder, comparing these with other known relaxation channels.

Findings

Spin-orbit coupling significantly influences spin nonconservation.

Random potential causes energy dissipation leading to spin-flip irreversibility.

Comparison shows different relaxation channels dominate under various conditions.

Abstract

We study spin wave relaxation in quantum Hall ferromagnet regimes. Spin-orbit coupling is considered as a factor determining spin nonconservation, and external random potential as a cause of energy dissipation making spin-flip processes irreversible. We compare this relaxation mechanism with other relaxation channels existing in a quantum Hall ferromagnet.