Is there a reentrant glass in binary mixtures?

Details Is there a reentrant glass in binary mixtures? Is there a reentrant glass in binary mixtures?

2004-02-09

arxiv.org/abs/cond-mat/0402254v1

Phys. Rev. Lett. 92, 225703 (2004)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.92.225703

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.

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