Activated bond-breaking processes preempt the observation of a sharp glass-glass transition in dense short-ranged attractive colloids
arXiv:cond-mat/0304100 · doi:10.1103/PhysRevLett.91.108301
Abstract
We study -- using molecular dynamics simulations -- the temperature dependence of the dynamics in a dense short-ranged attractive colloidal glass to find evidence of the kinetic glass-glass transition predicted by the ideal Mode Coupling Theory. According to the theory, the two distinct glasses are stabilized one by excluded volume and the other by short-ranged attractive interactions. By studying the density autocorrelation functions, we discover that the short-ranged attractive glass is unstable. Indeed, activated bond-breaking processes slowly convert the attractive glass into the hard-sphere one, preempting the observation of a sharp glass-glass transition.
4 pages, 3 figures; final version
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Cited by in corpus (17)
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- Gel to glass transition in simulation of a valence-limited colloidal system
- Theory and simulation of gelation, arrest and yielding in attracting colloids
- Multiple glass transitions in star polymer mixtures: Insights from theory and simulations
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- Aging in short-ranged attractive colloids: A numerical study
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- Mode-coupling theory predictions for a limited valency attractive square-well model
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- Discontinuous change from thermally- to geometrically- dominated effective interactions in colloidal solutions