Onset temperature of slow dynamics in glass forming liquids

Abstract

The behaviour of a model glass forming liquid is analyzed for a range of densities, with a focus on the temperature interval where the liquid begins to display non-Arrhenius temperature dependence on relaxation times. Through analyzing the dynamics along with the properties of local potential energy minima sampled by the liquid, a crossover or onset temperature T_s is identified, below which the liquid manifests slow dynamics, and a change in the character of typical local potential energy minima.