Nearly-logarithmic decay of correlations in glass-forming liquids

Details Nearly-logarithmic decay of correlations in glass-forming liquids Nearly-logarithmic decay of correlations in glass-forming liquids

2004-01-27

arxiv.org/abs/cond-mat/0401536v1

Phys. Rev. Lett. 92, 105701 (2004)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.92.105701

Nearly-logarithmic decay of correlations, which was observed for several supercooled liquids in optical-Kerr-effect experiments [G. Hinze et al. Phys. Rev. Lett. 84, 2437(2000), H. Cang et al. Phys. Rev. Lett. 90, 197401 (2003)], is explained within the mode-coupling theory for ideal glass transitions as manifestation of the $\beta$-peak phenomenon. A schematic model, which describes the dynamics by only two correlators, one referring to density fluctuations and the other to the reorientational fluctuations of the molecules, yields for strong rotation-translation coupling response functions in agreement with those measured for benzophenone and Salol for the time interval extending from 2 picoseconds to about 20 and 200 nanoseconds, respectively.

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