Is there a reentrant glass in binary mixtures?

Abstract

By employing computer simulations for a model binary mixture, we show that a reentrant glass transition upon adding a second component only occurs if the ratio $\alpha$ of the short-time mobilities between the glass-forming component and the additive is sufficiently small. For $\alpha \approx 1$, there is no reentrant glass, even if the size asymmetry between the two components is large, in accordance with two-component mode coupling theory. For $\alpha \ll 1$, on the other hand, the reentrant glass is observed and reproduced only by an effective one-component mode coupling theory.

4 pages, 3 figures

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• Multiple reentrant glass transitions in confined hard-sphere glasses
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• Sedimentation of colloidal plate-sphere mixtures and inference of particle characteristics from stacking sequences
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