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Sensitivity of arrest in mode-coupling glasses to low-q structure

M. J. Greenall·Th. Voigtmann·P. Monthoux·M. E. Cates
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Abstract

We quantify, within mode coupling theory, how changes in the liquid structure affect that of the glass. Apart from the known sensitivity to the structure factor $S(q)$ at wavevectors around the first sharp diffraction peak $q_0$, we find a strong (and inverted) response to structure at wavevectors \emph{below} this peak: an increase in $S(q_0/2)$ {\em lowers} the degree of arrest over a wide $q$-range. This strong sensitivity to `caged cage' packing effects, on length scales of order 2d, is much weaker in attractive glasses where short-range bonding dominates the steric caging effect.

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M. J. Greenall, Th. Voigtmann, P. Monthoux, M. E. Cates. 2006-05-25. Sensitivity of arrest in mode-coupling glasses to low-q structure. https://doi.org/10.1103/physreve.73.050501

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