Applications of the Stell-Hemmer Potential to Understanding Second Critical Points in Real Systems

TL;DR

This paper investigates the Stell-Hemmer core-softened potentials, linking their second critical point to experimental solid-solid transitions and demonstrating their ability to produce water-like anomalies.

Contribution

It provides a theoretical analysis connecting the second critical point of these potentials to experimental phenomena and explores their capacity to mimic water's anomalies.

Findings

The second critical point correlates with observed solid-solid isostructural critical points.

These potentials can generate anomalies similar to those in liquid water.

The study enhances understanding of phase behavior in complex systems.

Abstract

We consider the novel properties of the Stell-Hemmer core-softened potentials. First we explore how the theoretically predicted second critical point for these potentials is related to the occurrence of the experimentally observed solid-solid isostructural critical point. We then discuss how this class of potentials can generate anomalies analogous to those found experimentally in liquid water.