Eur. Phys. J. B 24, 483-486 (2001)
https://doi.org/10.1007/s10051-001-8702-5

Stretched exponential relaxation in the Coulomb glass

¹ Departamento de Física Aplicada, Universidad Politécnica de Cartagena, Campus Muralla del Mar, Cartagena, 30202 Murcia, Spain
² Dipartamento di Scienze Fisiche, Universitá di Napoli "Federico II" , Complesso Universitario di Monte Sant'Angelo, Via Cintia and INFM, Unitá di Napoli, 80126 Napoli, Italy

Corresponding author: ^a andiaz@upct.es

Received: 24 May 2001
Revised: 12 September 2001
Published online: 15 December 2001

Abstract

The relaxation of the specific heat and the entropy to their equilibrium values is investigated numerically for the three-dimensional Coulomb glass at very low temperatures. The long time relaxation follows a stretched exponential function, , with the exponent β increasing with the temperature. The relaxation time diverges as an Arrhenius law when .