Spatial correlations of mobility and immobility in a glass-forming Lennard-Jones liquid Export

@article{citeulike:1875705, abstract = {Using extensive molecular dynamics simulations of an equilibrium; glass-forming Lennard-Jones mixture; we characterize in detail the local atomic motions. We show that spatial correlations exist among particles undergoing extremely large ( ” mobile”) or extremely small ( ” immobile”) displacements over a suitably chosen time interval. The immobile particles form the cores of relatively compact clusters; while the mobile particles move cooperatively and form quasi-one-dimensional; stringlike clusters. The strength and length scale of the correlations between mobile particles are found to grow strongly with decreasing temperature; and the mean cluster size appears to diverge near the mode-coupling critical temperature. We show that these correlations in the particle displacements are related to equilibrium fluctuations in the local potential energy and local composition.}, author = {Donati, Claudio and Glotzer, Sharon C. and Poole, Peter H. and Kob, Walter and Plimpton, Steven J.}, citeulike-article-id = {1875705}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevE.60.3107}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRE/v60/i3/p3107_1}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRE/v60/i3/p3107_1}, doi = {10.1103/PhysRevE.60.3107}, journal = {Physical Review E}, keywords = {dynahetero, glass, simulation}, month = {Sep}, number = {3}, pages = {3107--3119}, posted-at = {2009-09-17 06:45:40}, priority = {0}, publisher = {American Physical Society}, title = {Spatial correlations of mobility and immobility in a glass-forming Lennard-Jones liquid}, url = {http://dx.doi.org/10.1103/PhysRevE.60.3107}, volume = {60}, year = {1999} }

TY - JOUR ID - citeulike:1875705 L3 - citeulike-article-id:1875705 N2 - Using extensive molecular dynamics simulations of an equilibrium; glass-forming Lennard-Jones mixture; we characterize in detail the local atomic motions. We show that spatial correlations exist among particles undergoing extremely large (“mobile”) or extremely small (“immobile”) displacements over a suitably chosen time interval. The immobile particles form the cores of relatively compact clusters; while the mobile particles move cooperatively and form quasi-one-dimensional; stringlike clusters. The strength and length scale of the correlations between mobile particles are found to grow strongly with decreasing temperature; and the mean cluster size appears to diverge near the mode-coupling critical temperature. We show that these correlations in the particle displacements are related to equilibrium fluctuations in the local potential energy and local composition. IS - 3 JF - Physical Review E EP - 3119 TI - Spatial correlations of mobility and immobility in a glass-forming Lennard-Jones liquid PB - American Physical Society VL - 60 SP - 3107 KW - dynahetero KW - glass KW - simulation AU - Donati, Claudio AU - Glotzer, Sharon AU - Poole, Peter AU - Kob, Walter AU - Plimpton, Steven PY - 1999/Sep// UR - http://dx.doi.org/10.1103/PhysRevE.60.3107 ER -