title: Analogy of the slow dynamics between the supercooled liquid and supercooled plastic crystal states of difluorotetrachloroethane.
abstract: Slow dynamics of difluorotetrachloroethane in both supercooled plastic crystal and supercooled liquid states have been investigated with molecular dynamics simulations. The temperature and wave-vector dependence of collective dynamics in both states are probed using coherent dynamical scattering functions S (Q,t). Our results confirm the strong analogy between molecular liquids and plastic crystals for which alpha-relaxation times and nonergodicity parameters are controlled by the nontrivial static correlations S (Q), as predicted by the mode coupling theory.
authors.affiliation: Laboratoire de Dynamique et Structure des Matériaux Moléculaires, CNRS UMR 8024, Université Lille I, Villeneuve d'Ascq, France.
authors.forename: F
authors.initials: F
authors.lastname: Affouard
authors.forename: M
authors.initials: M
authors.lastname: Descamps