Configurational entropy measurements in extremely supercooled liquids that break the glass ceiling - Laboratoire Charles Coulomb (L2C) Accéder directement au contenu
Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2017

Configurational entropy measurements in extremely supercooled liquids that break the glass ceiling

Ludovic Berthier
Patrick Charbonneau
Daniele Coslovich
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Andrea Saverio Ninarello
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Misaki Ozawa
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Sho Yaida
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Résumé

Liquids relax extremely slowly upon approaching the glass state. One explanation is that an entropy crisis, due to the rarefaction of available states, makes it increasingly arduous to reach equilibrium in that regime. Validating this scenario is challenging, because experiments offer limited resolution, while numerical studies lag more than eight orders of magnitude behind experimentally-relevant timescales. In this work we not only close the colossal gap between experiments and simulations but manage to create in-silico configurations that have no experimental analog yet. Deploying a range of computational tools, we obtain four estimates of their configurational entropy. These measurements consistently confirm that the steep entropy decrease observed in experiments is also found in simulations, even beyond the experimental glass transition. Our numerical results thus extend the new observational window into the physics of glasses and reinforce the relevance of an entropy crisis for understanding their formation.
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Dates et versions

hal-01630755 , version 1 (11-01-2024)

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Citer

Ludovic Berthier, Patrick Charbonneau, Daniele Coslovich, Andrea Saverio Ninarello, Misaki Ozawa, et al.. Configurational entropy measurements in extremely supercooled liquids that break the glass ceiling. Proceedings of the National Academy of Sciences of the United States of America, 2017, 114, pp.11356. ⟨10.1073/pnas.1706860114⟩. ⟨hal-01630755⟩
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