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Nearly-logarithmic decay of correlations in glass-forming liquids

W. Gotze·M. Sperl
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Abstract

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 $β$-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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W. Gotze, M. Sperl. 2004-01-27. Nearly-logarithmic decay of correlations in glass-forming liquids. https://doi.org/10.1103/physrevlett.92.105701

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