Hole-hole interaction in a strained In$_x$Ga$_{1-x}$As two dimensional system

TL;DR

This study investigates the interaction effects on conductivity in a strained 2D hole gas system, emphasizing the importance of Zeeman splitting, spin relaxation, and ballistic effects for accurate Fermi-liquid constant determination.

Contribution

It introduces a comprehensive approach to account for multiple effects influencing conductivity, enabling precise extraction of the Fermi-liquid constant in strained 2D hole systems.

Findings

Proper consideration of Zeeman splitting, spin relaxation, and ballistic effects improves conductivity modeling.

The Fermi-liquid constant $F_0^\sigma$ was accurately determined.

The model describes temperature and magnetic field dependence of conductivity.

Abstract

The interaction correction to the conductivity of 2D hole gas in strained GaAs/In$_x$Ga$_{1-x}$As/GaAs quantum well structures was studied. It is shown that the Zeeman splitting, spin relaxation and ballistic contribution should be taking into account for reliable determination of the Fermi-liquid constant $F_0^\sigma$. The proper consideration of these effects allows us to describe both th temperature and magnetic field dependences of the conductivity and find the value of $F_0^\sigma$.