Dynamical heterogeneities in a supercooled Lennard-Jones liquid

Details Dynamical heterogeneities in a supercooled Lennard-Jones liquid Dynamical heterogeneities in a supercooled Lennard-Jones liquid

1997-06-08

arxiv.org/abs/cond-mat/9706075v1

Phys. Rev. Lett. 79, 2827 (1997)

Physics

Condensed Matter

Disordered Systems and Neural Networks

8 pages of RevTex, 4 ps figures

Scientific paper

10.1103/PhysRevLett.79.2827

We present the results of a large scale molecular dynamics computer simulation study in which we investigate whether a supercooled Lennard-Jones liquid exhibits dynamical heterogeneities. We evaluate the non-Gaussian parameter for the self part of the van Hove correlation function and use it to identify ``mobile'' particles. We find that these particles form clusters whose size grows with decreasing temperature. We also find that the relaxation time of the mobile particles is significantly shorter than that of the bulk, and that this difference increases with decreasing temperature.

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