Polydisperse hard spheres: Crystallization kinetics in small systems and role of local structure
arXiv:1605.00094 · doi:10.1088/1742-5468/2016/8/084007
Abstract
We study numerically the crystallization of a hard-sphere mixture with 8\% polydispersity. Although often used as a model glass former, for small system sizes we observe crystallization in molecular dynamics simulations. This opens the possibility to study the competition between crystallization and structural relaxation of the melt, which typically is out of reach due to the disparate timescales. We quantify the dependence of relaxation and crystallization times on density and system size. For one density and system size we perform a detailed committor analysis to investigate the suitability of local structures as order parameters to describe the crystallization process. We find that local structures are strongly correlated with generic bond order and add little information to the reaction coordinate.
References in corpus (12)
- Glassy dynamics of kinetically constrained models
- The role of local structure in dynamical arrest
- Probing the equilibrium dynamics of colloidal hard spheres above the mode-coupling glass transition
- Growing length and time scales in glass forming liquids
- Why is Random Close Packing Reproducible?
- Understanding fragility in supercooled Lennard-Jones mixtures. I. Locally preferred structures
- Equilibrium phase behavior of polydisperse hard spheres
- Crystallization kinetics of colloidal model suspensions: recent achievements and new perspectives
- Locally preferred structures and many-body static correlations in viscous liquids
- Finite size effects in the dynamics of glass-forming liquids
- The role of shear in crystallization kinetics: From suppression to enhancement
- Avalanches mediate crystallization in a hard-sphere glass