%0 Journal Article
%T Configurational entropy measurements in extremely supercooled liquids that break the glass ceiling
%+ Laboratoire Charles Coulomb (L2C)
%A Berthier, Ludovic
%A Charbonneau, Patrick
%A Coslovich, Daniele
%A Ninarello, Andrea Saverio
%A Ozawa, Misaki
%A Yaida, Sho
%Z 4+23 pages, 3+12 figures; v2: final version, with various changes made. Data relevant to this work can be accessed at http://dx.doi.org/10.7924/G8ZG6Q9T. Réf Journal: PNAS 114, 11356-11361 (2017)
%< avec comité de lecture
%Z L2C:17-142
%@ 0027-8424
%J Proceedings of the National Academy of Sciences of the United States of America
%I National Academy of Sciences
%V 114
%P 11356
%8 2017
%D 2017
%Z 1704.08257
%R 10.1073/pnas.1706860114
%Z Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech]
%Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]Journal articles
%X 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.
%G English
%2 https://hal.science/hal-01630755/document
%2 https://hal.science/hal-01630755/file/1704.08257.pdf
%L hal-01630755
%U https://hal.science/hal-01630755
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021