2008/11/17 by Tomas Oppelstrup, Oppelstrup, Tomas, Mikhail Dzugutov +1
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Material Dynamics and Properties #Soft Condensed Matter (cond-mat.soft) #Theoretical and Computational Physics #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.0811.2817
4 pages, 4 figure, submitted to Physical Review Letters
arxiv created 2008/11/17 · openalex publication_date 2008/11/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A statistical analysis of the geometries of particle trajectories in the supercooled liquid state is reported. We examine two structurally different fragile glass-forming liquids simulated by molecular dynamics. In both liquids, the trajectories are found to exhibit a long-range localisation distinct from the short-range localisation within the cage of nearest neighbours. This novel diffusion anomaly is interpreted as a result of the potential-energy landscape topography of fragile glass-formers where the local energy minima coalesce into metabasins - compact domains with low escape probability.