Observation of glass phase in three-dimensional Coulomb glass model

Despite experimental results and mean-field theoretical calculations that predict the existence of a stable glass phase for electrons in a random potential, a thermodynamic Coulomb glass phase has remained elusive in numerical studies to date. Here we demonstrate that a Coulomb glass phase might exist at extremely low temperatures when studying the four-replica finite-size spin-glass correlation length using population annealing Monte Carlo. Our simulations also find a charge ordering phase for small enough random potentials.