Spin-valley interplay in two-dimensional disordered electron liquid

TL;DR

This paper investigates how spin and valley splittings affect resistivity and susceptibilities in a disordered 2D electron liquid, revealing nonmonotonic temperature dependence and novel behaviors with two maxima under certain conditions.

Contribution

It provides a detailed analysis of spin-valley interplay effects on physical observables in disordered 2D electron systems, including predictions of new temperature-dependent resistivity features.

Findings

Resistivity shows nonmonotonic temperature dependence with magnetic field.

Presence of spin or valley splitting leads to two-peak resistivity behavior.

Qualitative explanation of resistivity's temperature dependence in magnetic fields.

Abstract

We report the detailed study of the influence of the spin and valley splittings on such physical observables of the two-dimensional disordered electron liquid as resistivity, spin and valley susceptibilities. We explain qualitatively the nonmonotonic dependence of the resistivity with temperature in the presence of a parallel magnetic field. In the presence of either the spin splitting or the valley splitting we predict novel, with two maximum points, temperature dependence of the resistivity.