Evidence for compact cooperatively rearranging regions in a supercooled liquid
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
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.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-32181DOI: 10.1088/0953-8984/21/24/245101ISI: 000266581500002ScopusID: 2-s2.0-66349099277OAI: oai:DiVA.org:kth-32181DiVA: diva2:409478
QC 201104082011-04-082011-04-082011-04-08Bibliographically approved