Phase diagram of a polydisperse soft-spheres model for liquids and colloids

Details Phase diagram of a polydisperse soft-spheres model for liquids and colloids Phase diagram of a polydisperse soft-spheres model for liquids and colloids

2006-09-08

arxiv.org/abs/cond-mat/0609204v2

Phys. Rev. Lett. 98, 085702 (2007)

Physics

Condensed Matter

Soft Condensed Matter

Version to be published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.98.085702

The phase diagram of soft spheres with size dispersion has been studied by means of an optimized Monte Carlo algorithm which allows to equilibrate below the kinetic glass transition for all sizes distribution. The system ubiquitously undergoes a first order freezing transition. While for small size dispersion the frozen phase has a crystalline structure, large density inhomogeneities appear in the highly disperse systems. Studying the interplay between the equilibrium phase diagram and the kinetic glass transition, we argue that the experimentally found terminal polydispersity of colloids is a purely kinetic phenomenon.

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