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Dynamics of transient cages in a model 2D supercooled liquid

Krishnan, Gopika and Harbola, Upendra (2022) Dynamics of transient cages in a model 2D supercooled liquid. In: International Journal of Modern Physics B . ISSN 0217-9792

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Official URL: https://doi.org/10.1142/S0217979222500655


Supercooled state of a liquid is characterized by extremely slow and spatially heterogeneous dynamics attributed to caging of particles by their neighbors. The dynamics of cages in a model 2D supercooled liquid is studied by analyzing single particle trajectories. The temperature dependence of cage times and cage sizes is discussed. The average cage time is found to show power-law divergence as the critical temperature is approached. A correlation between cage sizes and cage survival time is identified. At higher temperatures, bigger cages survive for longer. However, this behavior changes at low enough temperatures, where a crossover timescale is observed beyond which the smallest cages are more likely to survive. This crossover time originates mainly due to different initial dynamics of the bigger and the smaller cages, which shows strong temperature dependence for smaller cages.

Item Type: Journal Article
Publication: International Journal of Modern Physics B
Publisher: World Scientific
Additional Information: The Copyright of this article belongs to the World Scientific
Keywords: cage dynamics; Molecular dynamics; Supercooled liquids
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 23 May 2022 05:03
Last Modified: 23 May 2022 05:03
URI: https://eprints.iisc.ac.in/id/eprint/72424

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