Artículo
Time evolution of dynamic propensity in a model glass former. The interplay between structure and dynamics
Fecha de publicación:
01/2009
Editorial:
American Institute of Physics
Revista:
Journal of Chemical Physics
ISSN:
0021-9606
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
By means of the isoconfigurational method we calculate the change in the propensity for motion that the structure of a glass-forming system experiences during its relaxation dynamics. The relaxation of such a system has been demonstrated to evolve by means of rapid crossings between metabasins of its potential energy surface (a metabasin being a group of mutually similar, closely related structures which differ markedly from other metabasins), as collectively relaxing units (d-clusters) take place. We now show that the spatial distribution of propensity in the system does not change significantly until one of these d-clusters takes place. However, the occurrence of a d-cluster clearly de-correlates the propensity of the particles, thus ending up with the dynamical influence of the structural features proper of the local metabasin. We also show an important match between particles that participate in d-clusters and that which show high changes in their propensity.
Palabras clave:
Glass
,
Structure
,
Dynamics
,
Dynamical Propensity
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Identificadores
Colecciones
Articulos(INQUISUR)
Articulos de INST.DE QUIMICA DEL SUR
Articulos de INST.DE QUIMICA DEL SUR
Citación
Rodriguez Fris, Jorge Ariel; Alarcon, Laureano Martin; Appignanesi, Gustavo Adrian; Time evolution of dynamic propensity in a model glass former. The interplay between structure and dynamics; American Institute of Physics; Journal of Chemical Physics; 130; 2; 1-2009; 24108-24114
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