Elastic Properties of Solid Argon at Very High Pressure, and Their First-Principles Calculation

Abstract

The rare-gas solid argon has provided an ideal system to study the fundamental material-science. A considerable amount of effort has been expended in attempts to determine the best interatomic potentials. Recently, elastic properties of solid Ar and their pressure dependence have been determined up to P=70 GPa, which can provide the standard data to estimate interatomic potentials. By considering these experiments, the first-principles calculation has been performed very recently. We present the topics of experimental and theoretical studies for solid Ar at very high pressures.