Diffusion conductivity and weak localization in two-dimensional structures with electrostatically induced random antidots array

TL;DR

This paper investigates weak localization in 2D systems with electrostatically created random antidots, analyzing magnetoconductivity to understand the influence of potential inhomogeneity on electron paths.

Contribution

It introduces an experimental approach to study weak localization in 2D structures with artificial inhomogeneity and derives the area distribution of closed electron paths.

Findings

Magnetoconductivity shape depends on closed path statistics

Fourier transformation reveals the area distribution function

Experimental results qualitatively agree with computer simulations

Abstract

Results of experimental study of the weak localization phenomenon in 2D system with artificial inhomogeneity of potential relief are presented. It is shown that the shape of the magnetoconductivity curve is determined by the statistics of closed paths. The area distribution function of closed paths has been obtained using the Fourier transformation of the magnetoconductivity curves taken at different temperatures. The experimental results are found in a qualitative agreement with the results of computer simulation.