Elastoplasticity Mediates Dynamical Heterogeneity Below the Mode-Coupling Temperature

2 Mar 2021 · Rahul N. Chacko, François P. Landes, Giulio Biroli, Olivier Dauchot, Andrea J. Liu, David R. Reichman ·

As liquids approach the glass transition temperature, dynamical heterogeneity emerges as a crucial universal feature of their behavior. Dynamic facilitation, where local motion triggers further motion nearby, plays a major role in this phenomenon. Here we show that long-range, elastically-mediated facilitation appears below the mode-coupling temperature, adding to the short-range component present at all temperatures. Our results suggest deep connections between the supercooled liquid and glass states, and pave the way for a deeper understanding of dynamical heterogeneity in glassy systems.

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Elastoplasticity Mediates Dynamical Heterogeneity Below the Mode-Coupling Temperature

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