Weak localization in p-type heterostructures in the presence of parallel magnetic field

TL;DR

This paper develops a theory for weak localization effects in two-dimensional p-type heterostructures under in-plane magnetic fields, revealing how Zeeman splitting influences quantum interference and conductivity corrections.

Contribution

It introduces a comprehensive model accounting for Zeeman splitting in holes, showing how in-plane magnetic fields reduce negative conductivity corrections in 2D heterostructures.

Findings

In-plane magnetic field halves the negative conductivity correction.

Weak localization magnetoconductivity is similar for quadratic and quartic Zeeman splittings.

Conductivity corrections are consistent across low and high hole densities.

Abstract

Theory of weak localization is developed for two-dimensional holes in the presence of in-plane magnetic field. The Zeeman splitting even in the hole momentum results in the spin-dependent phase changing the quantum interference. The negative correction to the conductivity is shown to decrease by a factor of two by the in-plane magnetic field. The positive magnetoconductivity in a classically weak perpendicular field caused by the weak localization is calculated for both quadratic and quartic in momentum Zeeman hole splittings. Calculations show that the conductivity corrections are very close to each other in these two cases of low and high hole density.