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

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.

8 pages, 10 figures

References in corpus (4)

• Direct measurement of the phase coherence length in a GaAs/GaAlAs square network
• Dephasing in quantum chaotic transport: a semiclassical approach
• Diffractive paths for weak localization in quantum billiards
• Nonuniversality of the interference quantum correction to conductivity beyond the diffusion regime