Entropy of Glasses
- 1 August 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 61 (5) , 570-573
- https://doi.org/10.1103/physrevlett.61.570
Abstract
The zero-temperature entropy of glasses is usually calculated from the specific heat measured during heating. We show that this only gives an upper bound for the entropy; measuring the specific heat during cooling would provide a lower bound. Furthermore, in a computer simulation, measuring the distribution of calorimetrically measured entropies on repeated fast coolings provides information about the internal relaxation mechanisms of the glass. Three different Monte Carlo systems illustrate our results: a model orientational glass, a single two-level system, and a small Ising spin-glass.Keywords
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