Energy relaxation in the spin-polarized disordered electron liquid

TL;DR

This paper investigates how energy relaxation in spin-polarized disordered electron systems depends on electron magnetization, revealing a non-monotonic relationship between inelastic scattering rate and spin polarization.

Contribution

It derives a quantum kinetic equation with a collision kernel explicitly dependent on electron magnetization, highlighting novel effects of spin polarization.

Findings

Inelastic scattering rate varies non-monotonically with spin polarization.

Derived a quantum kinetic equation incorporating spin-dependent collision kernel.

Identified the impact of spin polarization on energy relaxation processes.

Abstract

The energy relaxation in the spin-polarized disordered electron systems is studied in the diffusive regime. We derived the quantum kinetic equation in which the kernel of electron-electron collision integral explicitly depends on the electron magnetization. As the consequence, the inelastic scattering rate is found to have non-monotonic dependence on the spin polarization of the electron system.