Singular point of a system of Lennard-Jones particles at negative pressures |
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Authors: | Baidakov V G Protsenko S P |
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Affiliation: | Institute of Thermal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia. bai@itp.uran.ru |
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Abstract: | The method of molecular dynamics is used in a system of 2048 Lennard-Jones particles to determine the spinodal of a stretched liquid and crystal and the lines of their phase equilibrium at negative pressures. It is shown that a metastable extension of the melting line does not reach the zero isotherm, and ends on the spinodal of a stretched liquid. The point of termination of metastable liquid-crystal phase equilibrium is the singular point at a thermodynamic surface of states. |
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