# name
Dynamical correlations near dislocation jamming

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Dislocation assemblies exhibit a jamming or yielding transition at a critical external shear stress value  ¼ c. Here we study the heterogeneous and collective nature of dislocation dynamics within a crystal plasticity model close to c, by considering the first-passage properties of the dislocation dynamics. As the transition is approached in the moving phase, the first-passage time distribution exhibits scaling, and a related peak dynamical susceptibility  4 diverges as  4 ð  cÞ , with  1:1. We relate this scaling to an avalanche description of the dynamics. While the static structural correlations are found to be independent of the external stress, we identify a diverging dynamical correlation length y in the direction perpendicular to the dislocation glide motion.

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Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Dynamical correlations near dislocation jamming