Monte-Carlo Simulations of the Dynamical Behavior of the Coulomb Glass

TL;DR

This paper investigates the dynamical behavior of disordered Coulomb systems using damage-spreading Monte Carlo simulations, revealing a dynamical phase transition influenced by disorder and temperature.

Contribution

It introduces damage-spreading Monte Carlo simulations to study Coulomb glass dynamics and identifies a disorder-dependent dynamical phase transition.

Findings

Damage spreading coincides with equilibrium transition at zero disorder.

Finite disorder induces a dynamical phase transition below the pure system's transition temperature.

The study links disorder strength to the nature of the dynamical transition.

Abstract

We study the dynamical behavior of disordered many-particle systems with long-range Coulomb interactions by means of damage-spreading simulations. In this type of Monte-Carlo simulations one investigates the time evolution of the damage, i.e. the difference of the occupation numbers of two systems, subjected to the same thermal noise. We analyze the dependence of the damage on temperature and disorder strength. For zero disorder the spreading transition coincides with the equilibrium phase transition, whereas for finite disorder, we find evidence for a dynamical phase transition well below the transition temperature of the pure system.