2007-03-28
10:15 at HCI J 574

Dynamical arrest in model colloidal systems

Patrick Charbonneau

FOM-Amolf, Amsterdam, The Netherlands

We compare measures of dynamical heterogeneity in repulsive and nearly attractive glass formers. Slow growing heterogeneities are observed near the attractive glass regime, which also shows a smaller dynamical lengthscale and a greater susceptibility to short-distance processes than in the repulsive glass forming regime. This is consistent with the results from a spin-glass model that shows similar dynamical arrest phenomenology.