Structural Relaxation and Aging Scaling in the Coulomb and Bose Glass Models

TL;DR

This study uses Monte Carlo simulations to analyze the relaxation and aging behaviors of Coulomb and Bose glass models, focusing on how disorder, defects, and charge density changes influence their non-equilibrium dynamics.

Contribution

It provides new insights into the effects of disorder and defects on the relaxation and aging properties of Coulomb and Bose glass systems through detailed simulations.

Findings

Disorder and defects significantly affect the Coulomb gap and aging kinetics.

System's relaxation properties are sensitive to instantaneous charge or flux density changes.

The study characterizes the scaling behavior of relaxation in these glass models.

Abstract

We employ Monte Carlo simulations to study the relaxation properties of the two-dimensional Coulomb glass in disordered semiconductors and the three-dimensional Bose glass in type-II superconductors in the presence of extended linear defects. We investigate the effects of adding non-zero random on-site energies from different distributions on the properties of the correlation-induced Coulomb gap in the density of states (DOS) and on the non-equilibrium aging kinetics highlighted by the density autocorrelation functions. We also probe the sensitivity of the system's equilibrium and non-equilibrium relaxation properties to instantaneous changes in the density of charge carriers in the Coulomb glass or flux lines in the Bose glass.