Stretched exponential relaxation in the Coulomb glass

Details Stretched exponential relaxation in the Coulomb glass Stretched exponential relaxation in the Coulomb glass

2000-06-26

arxiv.org/abs/cond-mat/0006396v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages and 4 figures

Scientific paper

10.1007/s10051-001-8702-5

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, $f(t)=f_0\exp[-(t/\tau)^\beta]$, with the exponent $\beta$ increasing with the temperature. The relaxation time follows an Arrhenius behavior divergence when $T\to 0$. A relation between the specific heat and the entropy in the long time regime is found.

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