Structural-dynamical transition in the Wahnström mixture

Francesco Turci*, Thomas Speck, C. Patrick Royall

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

10 Citations (Scopus)
215 Downloads (Pure)

Abstract

In trajectory space, dynamical heterogeneities in glass-forming liquids correspond to the emergence of a dynamical phase transition between an active phase poor in local structure and an inactive phase which is rich in local structure. We support this scenario with the study of a model additive mixture of Lennard-Jones particles, quantifying how the choice of the relevant structural and dynamical observable affects the transition in trajectory space. We find that the low mobility, structure-rich phase is dominated by icosahedral order. Applying a non-equilibrium rheological protocol, we connect local order to the emergence of mechanical rigidity.

Original languageEnglish
Article number54
Number of pages14
JournalEuropean Physical Journal E
Volume41
Issue number4
Early online date26 Apr 2018
DOIs
Publication statusPublished - Apr 2018

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