Quantum corrections to conductivity of disordered electrons due to inelastic scattering off magnetic impurities

TL;DR

This paper investigates how inelastic scattering off rare magnetic impurities affects quantum corrections to the conductivity in two-dimensional disordered electron systems, revealing more complex low-temperature transport behavior than previously thought.

Contribution

It introduces a new analysis of quantum conductivity corrections considering inelastic scattering with magnetic impurities having different g-factors, highlighting additional temperature-dependent effects.

Findings

Additional temperature-dependent conductivity corrections of the Altshuler-Aronov type.

Low temperature transport behavior is more complex due to magnetic impurities.

Magnetic impurity spins influence quantum corrections beyond classical approximations.

Abstract

We study the quantum corrections to the conductivity of the two-dimensional disordered interacting electron system in the diffusive regime due to inelastic scattering off rare magnetic impurities. We focus on the case of very different g-factors for electrons and magnetic impurities. Within the Born approximation for the inelastic scattering off magnetic impurities we find additional temperature-dependent corrections to the conductivity of the Altshuler-Aronov type. Our results demonstrate that the low temperature transport in interacting disordered electron systems with rare magnetic impurities is more interesting than it was commonly believed on the basis of treatment of magnetic impurity spins as classical ones.