Non-linear rheology of layered systems - a phase model approach

Details Non-linear rheology of layered systems - a phase model approach Non-linear rheology of layered systems - a phase model approach

2007-09-25

arxiv.org/abs/0709.3883v2

J. Phys.: Conf. Ser. 89 012014 (2007)

Physics

Condensed Matter

Statistical Mechanics

10 pages, 5 figures, contribution to the conference proceeding of International Conference on Science of Friction, Irago Aichi

Scientific paper

10.1088/1742-6596/89/1/012014

We study non-linear rheology of a simple theoretical model developed to mimic layered systems such as lamellar structures under shear. In the present work we study a 2-dimensional version of the model which exhibits a Kosterlitz-Thouless transition in equilibrium at a critical temperature Tc. While the system behaves as Newtonain fluid at high temperatures T > Tc, it exhibits shear thinning at low temperatures T < Tc. The non-linear rheology in the present model is understood as due to motions of edge dislocations and resembles the non-linear transport phenomena in superconductors by vortex motions.

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