Complex Phase Behavior of The System of Particles with Smooth Potential with Repulsive Shoulder and Attractive Well

TL;DR

This study uses simulations to explore how particles with a smooth potential, including a repulsive shoulder and attractive well, exhibit complex phase behaviors and anomalies, highlighting the stabilizing effect of attraction on diffusion.

Contribution

It provides a detailed analysis of phase diagrams and anomalies for systems with varying repulsive and attractive interactions, revealing new insights into their combined effects.

Findings

Diffusion anomaly is stabilized by small attraction.

Phase behavior depends on shoulder width and well depth.

Thermodynamic anomalies are observed in the system.

Abstract

We report a detailed simulation study of the phase behavior of core softened system with attractive well. Different repulsive shoulder widthes and attractive well depthes are considered which allows to monitor the influence of repulsive and attractive forces on the phase diagram of the system. Thermodynamic anomalies in the systems are also studied. It is shown that the diffusion anomaly is stabilized by small attraction.