Isotropic soft-core potentials with two characteristic length scales and anomalous behaviour

Abstract

Isotropic soft-core potentials with two characteristic length scales have been used since 40 years to describe systems with polymorphism. In the recent years intense research is showing that these potentials also display polyamorphism and several anomalies, including structural, diffusion and density anomaly. These anomalies occur in a hierarchy that resembles the anomalies of water. However, the absence of directional bonding in these isotropic potentials makes them different from water. Other systems, such as colloidal suspensions, protein solutions or liquid metals, can be well described by these family of potentials, opening the possibility of studying the mechanism generating the polyamorphism and anomalies in these complex liquids.

References in corpus (11)

• Phase behavior of a fluid with competing attractive and repulsive interactions
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• Thermodynamics and Dynamics of the Two-Scale Spherically-Symmetric Jagla Model of Anomalous Liquids
• Structural Order for One-Scale and Two-Scale Potentials
• Water-like hierarchy of anomalies in a continuous spherical shouldered potential
• Structural anomalies for a three dimensional isotropic core-softened potential
• Metastable liquid-liquid coexistence and density anomalies in a core-softened fluid
• A Family of Tunable Spherically-Symmetric Potentials that Span the Range from Hard Spheres to Water-like Behavior
• Predictions of Dynamic Behavior Under Pressure for Two Scenarios to Explain Water Anomalies
• Softness dependence of the Anomalies for the Continuous Shouldered Well potential
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