Interaction Correction to the Longitudinal Conductivity and Hall Resistivity in High Quality Two-Dimensional GaAs Electron and Hole Systems

TL;DR

This paper investigates how electron-electron interactions affect the longitudinal conductivity and Hall resistivity in high-quality GaAs 2D systems, providing experimental validation for recent theoretical predictions and linking these effects to the anomalous metallic behavior at zero magnetic field.

Contribution

The study provides experimental evidence supporting the recent theory of interaction corrections in 2D electron systems, clarifying their role in anomalous metallic behavior.

Findings

Interaction corrections are consistent for conductivity and Hall resistivity.

Results support the theory that electron-electron interactions cause the metallic drop at B=0.

Experimental data align with recent theoretical predictions.

Abstract

We present a systematic study of the corrections to both the longitudinal conductivity and Hall resistivity due to electron-electron interactions in high quality GaAs systems using the recent theory of Zala et al. [Phys. Rev. B 64, 214204 (2001)]. We demonstrate that the interaction corrections to the longitudinal conductivity and Hall resistivity predicted by the theory are consistent with each other. This suggests that the anomalous metallic drop in resistivity at B=0 is due to interaction effects and supports the theory of Zala et al.