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 $\delta S/S<0$.

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

References in corpus (5)

• Universal theory of strange metals from spatially random interactions
• Large $N$ theory of critical Fermi surfaces II: conductivity
• Electronic thermal conductivity of disordered metals
• Quantum Interference of Hydrodynamic Modes in a Dirty Marginal Fermi Liquid
• Scale-dependent theory of the disordered electron liquid