Slow dynamics of a confined supercooled binary mixture II: Q space analysis

Details Slow dynamics of a confined supercooled binary mixture II: Q space analysis Slow dynamics of a confined supercooled binary mixture II: Q space analysis

2003-10-30

arxiv.org/abs/cond-mat/0310725v1

Phys. Rev. E 68, 061209 (2003)

Physics

Condensed Matter

Statistical Mechanics

8 pages with 8 figures. RevTeX. Accepted for publication in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.68.061209

We report the analysis in the wavevector space of the density correlator of a Lennard Jones binary mixture confined in a disordered matrix of soft spheres upon supercooling. In spite of the strong confining medium the behavior of the mixture is consistent with the Mode Coupling Theory predictions for bulk supercooled liquids. The relaxation times extracted from the fit of the density correlator to the stretched exponential function follow a unique power law behavior as a function of wavevector and temperature. The von Schweidler scaling properties are valid for an extended wavevector range around the peak of the structure factor. The parameters extracted in the present work are compared with the bulk values obtained in literature.

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