We report a detailed study of the influence of the electron-electron interaction on physical observables (conductance, etc.) of a disordered electron liquid in double quantum well heterostructure. We find that even in the case of common elastic scattering off electrons in both quantum wells, the asymmetry in the electron-electron interaction across and within quantum wells decouples them at low temperatures. Our results are in quantitative agreement with recent transport experiments on the gated double quantum well AlxGa1−xAs/GaAs/AlxGa1−xAs heterostructures.
@article{arxiv.1102.0084,
title = {Disordered electron liquid in double quantum well heterostructures: Renormalization group analysis and dephasing rate},
author = {I. S. Burmistrov and I. V. Gornyi and K. S. Tikhonov},
journal= {arXiv preprint arXiv:1102.0084},
year = {2011}
}