Dynamic properties of supercooled Lennard-Jones liquids: a molecular-dynamics study

Abstract

Results are presented of molecular-dynamics experiments in which the Lennard-Jones liquid is cooled isobarically into the metastable temperature region. At a reduced temperature T approximately=0.45 a specific-heat anomaly is observed. Results are given for the density and current-density correlation functions. The variation of viscosity and coefficient of self-diffusion with temperature can be fitted to a power-law behaviour with an exponent mu =1.8, in close agreement with predictions of recently proposed mode-coupling models.