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Evidence for compact cooperatively rearranging regions in a supercooled liquid
KTH, School of Computer Science and Communication (CSC), Numerical Analysis and Computer Science, NADA.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.
2009 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 21, no 24, 245101- p.Article in journal (Refereed) Published
Abstract [en]

We examine structural relaxation in a supercooled glass-forming liquid simulated by constant-energy constant-volume (NVE) molecular dynamics. Time correlations of the total kinetic energy fluctuations are used as a comprehensive measure of the system's approach to the ergodic equilibrium. We find that, under cooling, the total structural relaxation becomes delayed as compared with the decay of the component of the intermediate scattering function corresponding to the main peak of the structure factor. This observation can be explained by collective movements of particles preserving many-body structural correlations within compact three-dimensional (3D) cooperatively rearranging regions.

Place, publisher, year, edition, pages
2009. Vol. 21, no 24, 245101- p.
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-32181DOI: 10.1088/0953-8984/21/24/245101ISI: 000266581500002ScopusID: 2-s2.0-66349099277OAI: diva2:409478
QC 20110408Available from: 2011-04-08 Created: 2011-04-08 Last updated: 2011-04-08Bibliographically approved

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Elenius, MånsDzugutov, Michail
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