Equilibrium glassy phase in a polydisperse hard sphere system

Details Equilibrium glassy phase in a polydisperse hard sphere system Equilibrium glassy phase in a polydisperse hard sphere system

2005-03-29

arxiv.org/abs/cond-mat/0503685v2

Phys. Rev. Lett. 95, 248301 (2005)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.248301

The phase diagram of a polydisperse hard sphere system is examined by numerical minimization of a discretized form of the Ramakrishnan-Yussouff free energy functional. Crystalline and glassy local minima of the free energy are located and the phase diagram in the density-polydispersity plane is mapped out by comparing the free energies of different local minima. The crystalline phase disappears and the glass becomes the equilibrium phase beyond a "terminal" value of the polydispersity. A crystal to glass transition is also observed as the density is increased at high polydispersity. The phase diagram obtained in our study is qualitatively similar to that of hard spheres in a quenched random potential.

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