Low temperature dephasing saturation from elastic magnetic spin disorder and interactions

TL;DR

This paper investigates how elastic magnetic spin disorder and electron interactions influence the low temperature dephasing rate, revealing saturation behavior consistent with experimental observations.

Contribution

It provides a self-consistent diagrammatic analysis showing dephasing rate saturation due to magnetic scattering at low temperatures, aligning with experimental data.

Findings

Dephasing rate saturates at low temperature due to magnetic scattering.

Saturation magnitude depends on magnetic scattering strength.

Results agree with relevant experimental observations.

Abstract

We treat the question of the low temperature behavior of the dephasing rate of the electrons in the presence of elastic spin disorder scattering and interactions. In the frame of a self-consistent diagrammatic treatment, we obtain saturation of the dephasing rate in the limit of low temperature for magnetic scattering, in agreement with the non-interacting case. The magnitude of the dephasing rate is set by the strength of the magnetic scattering rate. We discuss the agreement of our results with relevant experiments.