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American Physical Society, Physical review E: Statistical, nonlinear, and soft matter physics, 5(73), 2006

DOI: 10.1103/physreve.73.050501

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Sensitivity of arrest in mode-coupling glasses to low-qstructure

Journal article published in 2006 by M. J. Greenall ORCID, T.-H. Voigtmann ORCID, 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 wave vectors around the first sharp diffraction peak q0, we find a strong (and inverted) response to structure at wave vectors below this peak: an increase in S(q0/2) 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.