Shear-thickening and entropy-driven reentrance

Details Shear-thickening and entropy-driven reentrance Shear-thickening and entropy-driven reentrance

2005-07-06

arxiv.org/abs/cond-mat/0507128v2

Phys. Rev. Lett. 95, 236001 (2005)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures, minor changes, references added

Scientific paper

10.1103/PhysRevLett.95.236001

We discuss a generic mechanism for shear-thickening analogous to entropy-driven phase reentrance. We implement it in the context of non-relaxational mean-field glassy systems: although very simple, the microscopic models we study present a dynamical phase diagram with second and first order stirring-induced jamming transitions leading to intermittency, metastability and phase coexistence as seen in some experiments. The jammed state is fragile with respect to change in the stirring direction. Our approach provides a direct derivation of a Mode-Coupling theory of shear-thickening.

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