Disordered electron liquid in double quantum well heterostructures: Renormalization group analysis and dephasing rate
Abstract
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.
- Publication:
-
Physical Review B
- Pub Date:
- August 2011
- DOI:
- 10.1103/PhysRevB.84.075338
- arXiv:
- arXiv:1102.0084
- Bibcode:
- 2011PhRvB..84g5338B
- Keywords:
-
- 72.10.-d;
- 71.30.+h;
- 73.43.Qt;
- Theory of electronic transport;
- scattering mechanisms;
- Metal-insulator transitions and other electronic transitions;
- Magnetoresistance;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 15 pages