Direct Identification of the Glass Transition: Growing Length Scale and the Onset of Plasticity

Details Direct Identification of the Glass Transition: Growing Length Scale and the Onset of Plasticity Direct Identification of the Glass Transition: Growing Length Scale and the Onset of Plasticity

2006-08-14

arxiv.org/abs/cond-mat/0608305v3

Europhysics Letters 77, 56002 (2007).

Physics

Condensed Matter

Statistical Mechanics

5 pages, 5 figs.; 2 figs. omitted, new fig., quasi-crystal discussion omitted, new material on relaxation times

Scientific paper

Understanding the mechanical properties of glasses remains elusive since the glass transition itself is not fully understood, even in well studied examples of glass formers in two dimensions. In this context we demonstrate here: (i) a direct evidence for a diverging length scale at the glass transition (ii) an identification of the glass transition with the disappearance of fluid-like regions and (iii) the appearance in the glass state of fluid-like regions when mechanical strain is applied. These fluid-like regions are associated with the onset of plasticity in the amorphous solid. The relaxation times which diverge upon the approach to the glass transition are related quantitatively.

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