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RESEARCH PRODUCT
Stringlike Cooperative Motion in a Supercooled Liquid
Steven J. PlimptonPeter H. PooleJack F. DouglasSharon C. GlotzerWalter KobClaudio Donatisubject
Physics010304 chemical physicsCondensed matter physicsMathematical modelGeneral Physics and AstronomyCondensed Matter::Disordered Systems and Neural Networks01 natural sciences3. Good healthExponential functionCondensed Matter::Soft Condensed MatterMolecular dynamics0103 physical sciencesQuasiparticleRelaxation (physics)Dynamical heterogeneity010306 general physicsGlass transitionSupercoolingdescription
Extensive molecular dynamics simulations are performed on a glass-forming Lennard-Jones mixture to determine the nature of the cooperative motions occurring in this model fragile liquid. We observe stringlike cooperative molecular motion (``strings'') at temperatures well above the glass transition. The mean length of the strings increases upon cooling, and the string length distribution is found to be nearly exponential.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-03-16 | Physical Review Letters |