title: Correlation between dynamical heterogeneities, structure and potential-energy distribution in a 2D amorphous solid.
abstract: We investigate the collective properties of particles in a 2D experimental system which consists of a bi-disperse mixture of colloidal particles confined at an air/water interface. We find a direct correlation between structure and dynamical heterogeneities in this system: particles belonging to locally ordered structures have lower potential energy and are slower than other particles. In a more general way we show that particles with high potential energy are dominating the dynamics especially in the α-relaxation regime.
authors.affiliation: Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Mazoyer
authors.forename: F
authors.initials: F
authors.lastname: Ebert
authors.forename: G
authors.initials: G
authors.lastname: Maret
authors.forename: P
authors.initials: P
authors.lastname: Keim