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 Al${}_x$Ga${}_{1-x}$As/GaAs/Al${}_x$Ga${}_{1-x}$As heterostructures.

15 pages; 5 figures

References in corpus (26)

• Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
• Metal-insulator transition in two-dimensional electron systems
• Interaction corrections at intermediate temperatures: I. Longitudinal conductivity and kinetic equation
• Valley susceptibility of an interacting two-dimensional electron system
• Counterflow measurements in strongly correlated GaAs hole bilayers: evidence for electron-hole pairing
• Vanishing Hall Resistance at High Magnetic Field in a Double Layer Two-Dimensional Electron System
• Metal-Insulator Transition in Disordered Two-Dimensional Electron Systems
• Two-dimensional electrons occupying multiple valleys in AlAs
• Dilute electron gas near the metal-insulator transition in two dimensions
• Flow diagram of the metal-insulator transition in two dimensions
• Interaction corrections at intermediate temperatures: dephasing time
• Interaction Effects in Conductivity of Si Inversion Layers at Intermediate Temperatures
• In-plane Magnetoconductivity of Si-MOSFET's: A Quantitative Comparison between Theory and Experiment
• Frictional Drag between Two Dilute Two-Dimensional Hole Layers
• Spin-valley phase diagram of the two-dimensional metal-insulator transition
• Metal-Insulator Transition in 2D: Experimental Test of the Two-Parameter Scaling
• Interaction Effects in Conductivity of a Two-Valley Electron System in High-Mobility Si Inversion Layers
• Establishing a non-Fermi liquid theory for disordered metals near two dimensions
• Intervalley scattering and weak localization in Si-based two-dimensional structures
• Critical behavior of transport and magnetotransport in 2D electron system in Si in the vicinity of the metal-insulator transition
• Spin-valley interplay in two-dimensional disordered electron liquid
• Test of scaling theory in two dimensions in the presence of valley splitting and intervalley scattering in Si-MOSFETs
• Renormalization group study of intervalley scattering and valley splitting in a two-valley system
• Interaction correction to conductivity of Al${}_x$Ga${}_{1-x}$As/GaAs double quantum well heterostructures near the balance
• Dephasing and interwell transitions in double quantum well heterostructures
• Renormalization group study of a two-valley system with spin-splitting

Cited by in corpus (3)

• Interaction and disorder effects in 3D topological insulator thin films
• Interaction correction to conductivity of Al${}_x$Ga${}_{1-x}$As/GaAs double quantum well heterostructures near the balance
• Quantum Fluctuations and Multifractally-Enhanced Superconductivity in Disordered Thin Films