Further details on the phase diagram of hard ellipsoids of revolution

Abstract

In recent work we revisited the phase diagram of hard ellipsoids of revolution (spheroids) by means of replica exchange Monte Carlo simulations. This was done by setting random initial configurations, and allows to confirm the formation of sm2 crystal structures at high densities [Phys. Rev. E 75, 020402 (2007)] for large anisotropies and stretched-fcc for small anisotropies. In this work we employed the same technique but setting the starting cells as sm2 crystal structures having the maximum known packing density [Phys. Rev. Lett. 92, 255506 (2004)]. This procedure yields a very rich behavior for quasi-spherical oblates and prolates. These systems, from low to high pressures, show the following phases: isotropic fluid, plastic solid, stretched-fcc solid, and sm2 solid. The first three transitions are first order, whereas the last one is a subtle, probably high order transition. This picture is consistent with the fact of having the sm2 structure capable of producing the maximally achievable density.

10 pages, 10 figures, to be published in JCP

References in corpus (8)

• Hypoconstrained Jammed Packings of Nonspherical Hard Particles: Ellipses and Ellipsoids
• Dynamics of uniaxial hard ellipsoids
• Revisiting the phase diagram of hard ellipsoids
• Novel crystal phase in suspensions of hard ellipsoids
• Glassy dynamics in monodisperse hard ellipsoids
• Organizing Principles for Dense Packings of Nonspherical Hard Particles: Not All Shapes Are Created Equal
• Equilibrium equation of state of a hard sphere binary mixture at very large densities using replica exchange Monte-Carlo simulations
• Communication: Inferring the equation of state of a metastable hard-sphere fluid from the equation of state of a hard-sphere mixture at high densities

Cited by in corpus (12)

• Assembly and Phase Transitions within Colloidal Crystals
• Basic Understanding of Condensed Phases of Matter via Packing Models
• Observation of liquid glass in suspensions of ellipsoidal colloids
• Equilibrium Phase Behavior and Maximally Random Jammed State of Truncated Tetrahedra
• Phase diagram of two-dimensional hard ellipses
• Novel dense crystalline packings of ellipsoids
• Hard convex lens-shaped particles: Characterization of dense disordered packings
• Effect of orientational restriction on monolayers of hard ellipsoids
• Critical behavior of hard squares in strong confinement
• Cuddling Ellipsoids: Densest local structures of uniaxial ellipsoids
• Geometric measures of uniaxial solids of revolution in ${\mathbb{R}}^4$ and their relation to the second virial coefficient
• A confined rod: mean field theory for hard rod-like particles