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タイトル: | Mutual information reveals multiple structural relaxation mechanisms in a model glass former |
著者: | Dunleavy, Andrew J. Wiesner, Karoline Yamamoto, Ryoichi https://orcid.org/0000-0002-8371-2833 (unconfirmed) Royall, C. Patrick |
著者名の別形: | 山本, 量一 |
キーワード: | Physical sciences Applied physics Materials science |
発行日: | 22-Jan-2015 |
出版者: | Nature Publishing Group |
誌名: | Nature Communications |
巻: | 6 |
論文番号: | 6089 |
抄録: | Among the key challenges to our understanding of solidification in the glass transition is that it is accompanied by little apparent change in structure. Recently, geometric motifs have been identified in glassy liquids, but a causal link between these motifs and solidification remains elusive. One ‘smoking gun’ for such a link would be identical scaling of structural and dynamic lengthscales on approaching the glass transition, but this is highly controversial. Here we introduce an information theoretic approach to determine correlations in displacement for particle relaxation encoded in the initial configuration of a glass-forming liquid. We uncover two populations of particles, one inclined to relax quickly, the other slowly. Each population is correlated with local density and geometric motifs. Our analysis further reveals a dynamic lengthscale similar to that associated with structural properties, which may resolve the discrepancy between structural and dynamic lengthscales. |
記述: | ガラスは本当に固体か? -コンピュータシミュレーションと情報理論による予測- 京都大学プレスリリース. 2015-01-22. |
著作権等: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
URI: | http://hdl.handle.net/2433/193232 |
DOI(出版社版): | 10.1038/ncomms7089 |
PubMed ID: | 25608791 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2015-01-22 |
出現コレクション: | 学術雑誌掲載論文等 |
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