Walter Kob

Testing mode-coupling theory for a supercooled binary Lennard-Jones mixture I: The van Hove correlation function

We report the results of a large scale computer simulation of a binary supercooled Lennard-Jones liquid. We find that at low temperatures the curves for the mean squared displacement of a tagged particle for different temperatures fall onto a master curve when they are plotted versus rescaled time

Dynamical Heterogeneities in a Supercooled Lennard-Jones Liquid

tD(T)

Scaling behavior in the beta -relaxation regime of a supercooled Lennard-Jones mixture.

, where

Static and dynamic properties of a viscous silica melt

D(T)

Inherent Structure Entropy of Supercooled Liquids

is the diffusion constant. The time range for which these curves follow the master curve is identified with the

Cooperative motion and growing length scales in supercooled confined liquids

\alpha

Universal Nature of Particle Displacements close to Glass and Jamming Transitions

-relaxation regime of mode-coupling theory (MCT). This master curve is fitted well by a functional form suggested by MCT. In accordance with idealized MCT,

Structure and dynamics of amorphous silica surfaces

D(T)

Computer simulations of supercooled liquids and glasses

shows a power-law behavior at low temperatures. The critical temperature of this power-law is the same for both types of particle and also the critical exponents are very similar. However, contrary to a prediction of MCT, these exponents are not equal to the ones determined previously for the divergence of the relaxation times of the intermediate scattering function [Phys. Rev. Lett. {\bf 73}, 1376 (1994)]. At low temperatures the van Hove correlation function (self as well as distinct part) shows hardly any sign of relaxation in a time interval that extends over about three decades in time. This time interval can be interpreted as the

Spontaneous and induced dynamic fluctuations in glass-formers I: General results and dependence on ensemble and dynamics

\beta