Interaction corrections to the thermopower of the disordered two-dimensional electron gas

Abstract

At low temperatures, the transport coefficients in the disordered electron gas acquire quantum corrections as a result of the complex interplay of disorder and interactions. The interaction corrections to the electric conductivity have their origin in virtual processes with typical electronic energies far exceeding the temperature. Here, we study interaction corrections $\delta S$ to the thermopower $S$ of the two-dimensional disordered electron gas with long-range Coulomb interactions. We show that while both real and virtual processes contribute to these corrections, the real processes are dominant and lead to a logarithmic temperature dependence of $\delta S/S$ with $\delta S/S<0$.

arXiv comment6 pages, 1 figure; replaced with published version; former supplementary material is now part of a separate manuscript

References in corpus (18)

• Universal theory of strange metals from spatially random interactions
• Interaction corrections to the thermal transport coefficients in disordered metals: quantum kinetic equation approach
• Large $N$ theory of critical Fermi surfaces II: conductivity
• Critical Behavior of a Strongly Interacting 2D Electron System
• Quantum kinetic approach for studying thermal transport in the presence of electron-electron interactions and disorder
• Electronic thermal conductivity of disordered metals
• Critical behaviour of thermopower and conductivity at the metal-insulator transition in high-mobility Si-MOSFETs
• Electron-electron interaction corrections to the thermal conductivity in disordered conductors
• Keldysh approach to the renormalization group analysis of the disordered electron liquid
• Interaction-induced metallicity in a two-dimensional disordered non-Fermi liquid
• Thermal Transport and Wiedemann-Franz Law in the Disordered Fermi Liquid
• Quantum Interference of Hydrodynamic Modes in a Dirty Marginal Fermi Liquid
• Heat diffusion in the disordered electron gas
• Renormalization group analysis of thermal transport in the disordered Fermi liquid
• Theory of Thermal Conductivity in the Disordered Electron Liquid
• Non-linear sigma model with particle-hole asymmetry for the disordered two-dimensional electron gas
• Quantum mechanics with a time-dependent random unitary Hamiltonian: A perturbative study of the nonlinear Keldysh sigma-model
• Scale-dependent theory of the disordered electron liquid