Nearly-logarithmic decay of correlations in glass-forming liquids

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 $\beta$-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.

4 pages, 3 figures

References in corpus (1)

• Logarithmic Relaxation in Glass-Forming Systems

Cited by in corpus (8)

• Excess wing in glass-forming glycerol and LiCl-glycerol mixtures detected by neutron scattering
• High-frequency dynamics of type-B glass formers investigated by broadband dielectric spectroscopy
• Broadband dielectric spectroscopy on benzophenone: alpha relaxation, beta relaxation, and mode coupling theory
• Nearly-logarithmic decay in the colloidal hard-sphere system
• The Cole-Cole Law for Critical Dynamics in Glass-Forming Liquids
• Dielectric spectroscopy in benzophenone: The beta relaxation and its relation to the mode-coupling Cole-Cole peak
• Effect of adding nanometre-sized heterogeneities on the structural dynamics and the excess wing of a molecular glass former
• A simple spin model for three steps relaxation and secondary proccesses in glass formers