article · 24/09/2010
Spatiotemporal Hierarchy of Relaxation Events, Dynamical Heterogeneities, and Structural Reorganization in a Supercooled Liquid
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Résumé
We identify the pattern of microscopic dynamical relaxation for a two-dimensional glass-forming liquid. On short time scales, bursts of irreversible particle motion, called cage jumps, aggregate into clusters. On larger time scales, clusters aggregate both spatially and temporally into avalanches. This propagation of mobility takes place along the soft regions of the systems, which have been identified by computing isoconfigurational Debye-Waller maps. Our results characterize the way in which dynamical heterogeneity evolves in moderately supercooled liquids and reveal that it is astonishingly similar to the one found for dense glassy granular media.
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Candelier, R., Widmer-Cooper, A., Kummerfeld, J.-K., Dauchot, O., Biroli, G., Harrowell, P., & Reichman, D.-R. (2010). Spatiotemporal Hierarchy of Relaxation Events, Dynamical Heterogeneities, and Structural Reorganization in a Supercooled Liquid. Physical Review Letters, 105(13). https://doi.org/10.1103/PhysRevLett.105.135702@article{Candelier2010_10,
author = {Candelier, R. and Widmer-Cooper, A. and Kummerfeld, J. K. and Dauchot, O. and Biroli, G. and Harrowell, P. and Reichman, D. R.},
year = {2010},
month = {9},
title = {Spatiotemporal Hierarchy of Relaxation Events, Dynamical Heterogeneities, and Structural Reorganization in a Supercooled Liquid},
journal = {Physical Review Letters},
publisher = {AMER PHYSICAL SOC},
volume = {105},
number = {13},
address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
abstract = {We identify the pattern of microscopic dynamical relaxation for a two-dimensional glass-forming liquid. On short time scales, bursts of irreversible particle motion, called cage jumps, aggregate into clusters. On larger time scales, clusters aggregate both spatially and temporally into avalanches. This propagation of mobility takes place along the soft regions of the systems, which have been identified by computing isoconfigurational Debye-Waller maps. Our results characterize the way in which dynamical heterogeneity evolves in moderately supercooled liquids and reveal that it is astonishingly similar to the one found for dense glassy granular media.},
url = {http://www.dx.doi.org/10.1103/PhysRevLett.105.135702},
doi = {10.1103/PhysRevLett.105.135702},
issn = {0031-9007},
}TY - JOUR
AU - Candelier, R.
AU - Widmer-Cooper, A.
AU - Kummerfeld, J. K.
AU - Dauchot, O.
AU - Biroli, G.
AU - Harrowell, P.
AU - Reichman, D. R.
PY - 2010
DA - 2010/09/24
TI - Spatiotemporal Hierarchy of Relaxation Events, Dynamical Heterogeneities, and Structural Reorganization in a Supercooled Liquid
JO - Physical Review Letters
VL - 105
IS - 13
PB - AMER PHYSICAL SOC
SN - 0031-9007
AB - We identify the pattern of microscopic dynamical relaxation for a two-dimensional glass-forming liquid. On short time scales, bursts of irreversible particle motion, called cage jumps, aggregate into clusters. On larger time scales, clusters aggregate both spatially and temporally into avalanches. This propagation of mobility takes place along the soft regions of the systems, which have been identified by computing isoconfigurational Debye-Waller maps. Our results characterize the way in which dynamical heterogeneity evolves in moderately supercooled liquids and reveal that it is astonishingly similar to the one found for dense glassy granular media.
DO - 10.1103/PhysRevLett.105.135702
UR - http://www.dx.doi.org/10.1103/PhysRevLett.105.135702
ER -