Electron Glass

Abstract

Numerical calculations on a model of localized interacting electrons are reported. A Coulomb gap is found in the density of states for bare and dressed single-particle excitations, which fills with increasing temperature. By making an analogy with a random-field Ising spin-glass with $\frac{1}{\mathcal{r}}$ interactions, evidence is found, in a modified Edwards-Anderson order parameter, of glasslike order at low temperatures.