Signature of ergodicity in the dynamic response of amorphous systems
- 1 September 1992
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (9) , 5787-5790
- https://doi.org/10.1103/physrevb.46.5787
Abstract
We have analyzed dynamical measurements from materials near their liquid-glass transition. The primary response is accurately characterized by a model for dispersive excitations on specific distributions of independently relaxing domains. Liquids have an equilibrium (Gaussian) distribution of domain sizes, which changes abruptly to a locally random (Poisson-like) distribution in the glass. When quenched to a temperature initially in the glass phase, after a definite anneal time, the Poisson-like distribution changes abruptly back to the Gaussian distribution characteristic of a liquidKeywords
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