Front-mediated melting of ultrastable glasses

Journal Article

Ultrastable vapor-deposited glasses display peculiar properties. In particular, upon heating they melt via a liquid front that originates at the free surface and propagates over a mesoscopic crossover length, before crossing over to bulk melting. We combine swap Monte Carlo with molecular dynamics simulations to prepare and melt amorphous films of a kinetic stability comparable to experiments. We observe both bulk and front melting, and the crossover between them. We measure the front velocity over a broad range of conditions, and a crossover length scale that grows to nearly 400 particle diameters in the regime accessible to simulations.

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Duke Authors

Cited Authors

  • Flenner, E; Berthier, L; Charbonneau, P; Fullerton, CJ