Eur. Phys. J. B (2016) 89: 252
https://doi.org/10.1140/epjb/e2016-70368-y

Regular Article

Structural relaxation and aging scaling in the Coulomb and Bose glass models

¹ Department of Physics & Center for Soft Matter and Biological Physics (MC 0435), Robeson Hall, 850 West Campus Drive, Virginia Tech, Blacksburg, 24061 Virginia, USA
² Physics and Engineering Department, Washington and Lee University, Lexington, VA 24450, USA
³ Academy of Integrated Science, College of Science (MC 0405), North End Center, Suite 4300, 300 Turner Street NW, Virginia Tech, Blacksburg, Virginia 24061, USA

^a e-mail: tauber@vt.edu

Received: 9 June 2016
Received in final form: 13 August 2016
Published online: 21 November 2016

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.