Anomalous magnetoconductance due to weak localization in 2D systems with anisotropic scattering: computer simulation

TL;DR

This paper uses computer simulations to analyze how anisotropic scattering affects weak localization-induced negative magnetoresistance in 2D systems, showing that the magnetic field dependence can be described similarly to isotropic cases but with modified parameters.

Contribution

It demonstrates through simulation that anisotropic scattering alters the magnetoresistance behavior, providing modified parameters for the well-known diffusion limit expression.

Findings

Magnetoresistance dependence can be described by the known expression with adjustments.

Prefactor in the expression is less than unity due to anisotropy.

Breaking-phase length differs from the true value in anisotropic scattering.

Abstract

The results of computer simulation of particle motion over the plane with randomly distributed scatters are presented. They are used to analyse the influence of scattering anisotropy on the negative magnetoresistance due to weak localisation. It is shown that the magnetic field dependence of magnetoresistance in this case can be described by the well known expression, obtained in the diffusion limit for isotropic scatternig, but with the prefactor less than unity and breaking-phase length which differs from the true value.