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Cang H, Novikov VN, Fayer MD. Experimental observation of a nearly logarithmic decay of the orientational correlation function in supercooled liquids on the picosecond-to-nanosecond time scales. Phys Rev Lett. 2003;90(19):197401doi: 10.1103/PhysRevLett.90.197401.
Cang, H., Novikov, V. N., & Fayer, M. D. (2003). Experimental observation of a nearly logarithmic decay of the orientational correlation function in supercooled liquids on the picosecond-to-nanosecond time scales. Physical review letters, 90(19), 197401. https://doi.org/10.1103/PhysRevLett.90.197401
Cang, Hu, et al. "Experimental observation of a nearly logarithmic decay of the orientational correlation function in supercooled liquids on the picosecond-to-nanosecond time scales." Physical review letters vol. 90,19 (2003): 197401. doi: https://doi.org/10.1103/PhysRevLett.90.197401
Cang H, Novikov VN, Fayer MD. Experimental observation of a nearly logarithmic decay of the orientational correlation function in supercooled liquids on the picosecond-to-nanosecond time scales. Phys Rev Lett. 2003 May 16;90(19):197401. doi: 10.1103/PhysRevLett.90.197401. Epub 2003 May 13. PMID: 12785982.
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Phys Rev Lett. 2003 May 16;90(19):197401. doi: 10.1103/PhysRevLett.90.197401. Epub 2003 May 13.

Experimental observation of a nearly logarithmic decay of the orientational correlation function in supercooled liquids on the picosecond-to-nanosecond time scales.

Physical review letters

Hu Cang, V N Novikov, M D Fayer

Affiliations

  1. Department of Chemistry, Stanford University, Stanford, California 94305, USA.

PMID: 12785982 DOI: 10.1103/PhysRevLett.90.197401

Abstract

Dynamics of five supercooled molecular liquids have been studied using optical heterodyne detected optical Kerr effect experiments. "Intermediate" time scale power law decays (approximately 2 ps to 1-10 ns) with temperature independent exponents close to -1 have been observed in all five samples from high temperature to approximately T(c), the mode-coupling theory (MCT) critical temperature. The amplitude of the intermediate power law increases with temperature as [(T-T(c))/T(c)](1/2). The results cannot be explained by standard MCT, and one possible explanation within MCT would require the higher order singularity scenario, thought to be highly improbable, to be virtually universal.

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