Dynamics of transient cages in a model 2D supercooled liquid

Autor:	Gopika Krishnan, Upendra Harbola
Rok vydání:	2022
Předmět:	Condensed Matter::Soft Condensed Matter Physics::Atomic and Molecular Clusters Statistical and Nonlinear Physics Condensed Matter Physics Quantitative Biology::Other
Zdroj:	International Journal of Modern Physics B. 36
ISSN:	1793-6578 0217-9792
DOI:	10.1142/s0217979222500655
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9754b2b06f4340e37bb3196bbd2ea43 https://doi.org/10.1142/s0217979222500655 Zobrazit plný text záznamu