Stretched exponential relaxation in the Coulomb glass
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URI: http://arxiv.org/abs/cond-mat/0006396URI: http://hdl.handle.net/10317/579
ISSN: 1434-6036
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Física AplicadaSponsors
This work was supported by the European TMR Network- Fractals (Contract No. FMRXCT980183). A. Díaz-Sánchez acknowledges support from a Postdoctoral Grant from the European TMR Network-Fractals. We are indebted to M. Ortuño, A. Möbius, M. Pollak, and A. Coniglio for stimulating discussions.Publication date
2002Publisher
EDP Sciences; Società Italiana di Fisica; Springer-VerlagBibliographic Citation
DÍAZ SÁNCHEZ, A., PÉREZ GARRIDO, A., Stretched exponential relaxation in the Coulomb glass. European Physical Journal B, 24: 483-486, 2001. ISSN 1434-6036Keywords
Cristales CoulombTres dimensiones
Equilibrio térmico
Proceso de relajación en un calor específico
Bajas temperaturas
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, f(t) = f0 exp −(t/ ) , with the exponent increasing with the temperature. The relaxation time follows an Arrhenius behavior divergence when T → 0. A relation between the specific heat and the entropy in the long time regime is found.
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