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Enhanced Grüneisen Parameter in Supercooled Water

We use the recently-proposed compressible cell Ising-like model to estimate the ratio between thermal expansivity and specific heat (the Grüneisen parameter Γ(s)) in supercooled water. Near the critical pressure and temperature, Γ(s) becomes significantly sensitive to thermal fluctuations of the ord...

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Autores principales: O. Gomes, Gabriel, Stanley, H. Eugene, Souza, Mariano de
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6700159/
https://www.ncbi.nlm.nih.gov/pubmed/31427698
http://dx.doi.org/10.1038/s41598-019-48353-4
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author O. Gomes, Gabriel
Stanley, H. Eugene
Souza, Mariano de
author_facet O. Gomes, Gabriel
Stanley, H. Eugene
Souza, Mariano de
author_sort O. Gomes, Gabriel
collection PubMed
description We use the recently-proposed compressible cell Ising-like model to estimate the ratio between thermal expansivity and specific heat (the Grüneisen parameter Γ(s)) in supercooled water. Near the critical pressure and temperature, Γ(s) becomes significantly sensitive to thermal fluctuations of the order-parameter, a characteristic behavior of pressure-induced critical points. Such enhancement of Γ(s) indicates that two energy scales are governing the system, namely the coexistence of high- and low-density liquids, which become indistinguishable at the critical point in the supercooled phase. The temperature dependence of the compressibility, sound velocity and pseudo-Grüneisen parameter Γ(w) are also reported. Our findings support the proposed liquid-liquid critical point in supercooled water in the No-Man’s Land regime, and indicates possible applications of this model to other systems. In particular, an application of the model to the qualitative behavior of the Ising-like nematic phase in Fe-based superconductors is also presented.
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spelling pubmed-67001592019-08-21 Enhanced Grüneisen Parameter in Supercooled Water O. Gomes, Gabriel Stanley, H. Eugene Souza, Mariano de Sci Rep Article We use the recently-proposed compressible cell Ising-like model to estimate the ratio between thermal expansivity and specific heat (the Grüneisen parameter Γ(s)) in supercooled water. Near the critical pressure and temperature, Γ(s) becomes significantly sensitive to thermal fluctuations of the order-parameter, a characteristic behavior of pressure-induced critical points. Such enhancement of Γ(s) indicates that two energy scales are governing the system, namely the coexistence of high- and low-density liquids, which become indistinguishable at the critical point in the supercooled phase. The temperature dependence of the compressibility, sound velocity and pseudo-Grüneisen parameter Γ(w) are also reported. Our findings support the proposed liquid-liquid critical point in supercooled water in the No-Man’s Land regime, and indicates possible applications of this model to other systems. In particular, an application of the model to the qualitative behavior of the Ising-like nematic phase in Fe-based superconductors is also presented. Nature Publishing Group UK 2019-08-19 /pmc/articles/PMC6700159/ /pubmed/31427698 http://dx.doi.org/10.1038/s41598-019-48353-4 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
O. Gomes, Gabriel
Stanley, H. Eugene
Souza, Mariano de
Enhanced Grüneisen Parameter in Supercooled Water
title Enhanced Grüneisen Parameter in Supercooled Water
title_full Enhanced Grüneisen Parameter in Supercooled Water
title_fullStr Enhanced Grüneisen Parameter in Supercooled Water
title_full_unstemmed Enhanced Grüneisen Parameter in Supercooled Water
title_short Enhanced Grüneisen Parameter in Supercooled Water
title_sort enhanced grüneisen parameter in supercooled water
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6700159/
https://www.ncbi.nlm.nih.gov/pubmed/31427698
http://dx.doi.org/10.1038/s41598-019-48353-4
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