Phase diagram of the penetrable square well-model
arXiv:1101.0708 · doi:10.1209/0295-5075/93/26002
Abstract
We study a system formed by soft colloidal spheres attracting each other via a square-well potential, using extensive Monte Carlo simulations of various nature. The softness is implemented through a reduction of the infinite part of the repulsive potential to a finite one. For sufficiently low values of the penetrability parameter we find the system to be Ruelle stable with square-well like behavior. For high values of the penetrability the system is thermodynamically unstable and collapses into an isolated blob formed by a few clusters each containing many overlapping particles. For intermediate values of the penetrability the system has a rich phase diagram with a partial lack of thermodynamic consistency.
6 pages and 5 figures
References in corpus (6)
- Penetrable Square-Well fluids: Exact results in one dimension
- Effective Soft-Core Potentials and Mesoscopic Simulations of Binary Polymer Mixtures
- Structure of penetrable-rod fluids: Exact properties and comparison between Monte Carlo simulations and two analytic theories
- Penetrable-Square-Well fluids: Analytical study and Monte Carlo simulations
- A Numerical Test of a High-Penetrability Approximation for the One-Dimensional Penetrable-Square-Well Model
- Non existence of a phase transition for the Penetrable Square Wells in one dimension