Cross-over behavior of disordered interacting two-dimensional electron systems in a parallel magnetic field

TL;DR

This paper analyzes how disordered 2D electron systems transition from nonmonotonic to insulating resistance behavior under increasing parallel magnetic fields, using renormalization group theory.

Contribution

It introduces a qualitative explanation for the crossover in resistance behavior in disordered 2D electron systems under magnetic fields using one-loop renormalization group equations.

Findings

Resistance changes from reentrant to insulating behavior with increasing magnetic field.

Theoretical analysis aligns with experimental observations.

Provides insight into magnetic field effects on disordered electron systems.

Abstract

We present analysis of the cross-over behavior of disordered interacting two-dimensional electron systems in the parallel magnetic field. Using the so-called cross-over one-loop renormalization group equations for the resistance and electron-electron interaction amplitudes we qualitatively explain experimentally observed transformation of the temperature dependence of the resistance from a reentrant (nonmonotonic) behavior in relatively weak fields into an insulating-type behavior in stronger fields.