| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-1017 - C8-1018 | |
| DOI | https://doi.org/10.1051/jphyscol:19888463 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1017-C8-1018
DOI: 10.1051/jphyscol:19888463
Service de Physique du Solide et de Résonance Magnétique, C.E.N. Saclay, 91191 Gif sur Yvette Cedex, France
J. Phys. Colloques 49 (1988) C8-1017-C8-1018
DOI: 10.1051/jphyscol:19888463
A FRACTAL CLUSTER MODEL RELEVANT TO THE SPIN GLASS PROPERTIES BELOW Tg
M. Ocio, J. Hammann, P. Refrégier et E. VincentService de Physique du Solide et de Résonance Magnétique, C.E.N. Saclay, 91191 Gif sur Yvette Cedex, France
Abstract
We propose a generalization of the fractal cluster model below the transition temperature. This picture is directly derived from the observation that after a quench from Tg to a lower temperature, ageing of the dynamics leads, at very large ages, to a new critical behavior. The number of spins involved is reduced by the amount of spins frozen through the quench. This picture is coherent with all of the experimental results below Tg.