Evidence for compact cooperatively rearranging regions in a supercooled liquid
2009 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, Vol. 21, no 24, 245101-1-245101-5 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 orrelations within compact three-dimensional (3D) cooperatively rearranging regions.
Place, publisher, year, edition, pages
IOP Publishing Limited , 2009. Vol. 21, no 24, 245101-1-245101-5 p.
Supercooled liquid, liquid-glass transition, glass, liquid relaxation
Condensed Matter Physics Condensed Matter Physics
Research subject Materials Science
IdentifiersURN: urn:nbn:se:su:diva-27897DOI: 10.1088/0953-8984/21/24/245101OAI: oai:DiVA.org:su-27897DiVA: diva2:219633