Fragility and elastic behavior of a supercooled liquid

Details Fragility and elastic behavior of a supercooled liquid Fragility and elastic behavior of a supercooled liquid

2008-01-09

arxiv.org/abs/0801.1377v1

Physical Review E 76, 061501 (2007)

Physics

Condensed Matter

Soft Condensed Matter

20 pages, 9 figures (.eps)

Scientific paper

10.1103/PhysRevE.76.061501

A model for the supercooled liquid is considered by taking into account its solid like properties. We focus on how the long time dynamics is affected due to the coupling between the slowly decaying density fluctuations and the local displacement variables in the frozen liquid. Results from our model agree with the recent observation of Novikov and Sokolov [Nature (London) {\bf 431}, 961 (2004)] that the fragility index $m$ of a glass forming material is linearly related to the corresponding ratio $K/G$ of the bulk and the shear moduli.

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