Aging of a colloidal “Wigner” glass
- 1 January 1999
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 45 (1) , 52-57
- https://doi.org/10.1209/epl/i1999-00130-3
Abstract
We study the aging of a colloidal glass, which is obtained for extremely low volume fractions due to strong electrostatic repulsions, leading to the formation of a "Wigner glass". During the aging, a new crossover between a complete and incomplete decay of the correlation function is observed, accompanied by an increase in the non-ergodicity parameter. The dynamics can be described as a cage-diffusion process. For short times, the escape of the particles from "cages" formed by neighbouring particles dominates; for long times the particles cannot escape anymore and the system becomes strongly non-ergodic.Keywords
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