Cooperative motion in Lennard-Jones binary mixtures below the glass transition

Details Cooperative motion in Lennard-Jones binary mixtures below the glass transition Cooperative motion in Lennard-Jones binary mixtures below the glass transition

2000-04-20

arxiv.org/abs/cond-mat/0004356v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 5 figures

Scientific paper

Using the activation-relaxation technique (ART), we study the nature of relaxation events in a binary Lennard-Jones system above and below the glass transition temperature (T_g). ART generates trajectories with almost identical efficiency at all temperature, thus avoiding the exponential slowing down below T_g and providing extensive sampling everywhere. Comparing these runs, we find that the number of atoms involved in an event decreases strongly with temperature. In particular, while in the supercooled liquid activated events are collective, involving on average thirty atoms or more, events below T_g involve mostly single atoms and produce minimal disturbance of the local environment. These results confirm the interpretation and the generality of recent NMR results by Tang et al (Nature 402, 160 (1999)).

Affiliated with

Also associated with

No associations

Rating

Cooperative motion in Lennard-Jones binary mixtures below the glass transition does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cooperative motion in Lennard-Jones binary mixtures below the glass transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cooperative motion in Lennard-Jones binary mixtures below the glass transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-144170