Glasses and spin glasses: a parallel

J. Souletie , D. Bertrand

We show that the classification of glasses from “strong” to “fragile” can also be applied to spin glasses. Fragile, intermediate and strong behaviours would mean different universality classes and the strong limit would correspond to a lower critical dimension in the framework of the current scaling approach. While the class of a spin glass seems to be attached to the frozen in anisotropy of the interactions, there are experimental signs in glass-forming systems that a strong regime is the result of a cross-over from a more fragile high-temperature situation. The same fact can also be interpreted as a cross-over towards a more anisotropic state or as a restriction of space dimensionality.

Domaines: Articles anciens

J. Souletie, D. Bertrand. Glasses and spin glasses: a parallel. Journal de Physique I, 1991, 1 (11), pp.1627-1637. ⟨10.1051/jp1:1991230⟩. ⟨jpa-00246440⟩