Light scattering spectroscopy of the liquid-glass transition

H. Z. Cummins, G. Li, W. M. Du, J. Hernandez, N. J. Tao

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Supercooled liquids approaching the liquid-glass transition exhibit unusual properties associated with structural relaxation. The mode-coupling theory (MCT) of supercooled liquid dynamics shows that non-linear interactions among density fluctuation modes can produce effects resembling these observations. MCT produces detailed predictions for the dynamics of density fluctuations in supercooled liquids, including a crossover from liquid to glassy dynamics at a critical temperature Tc. Recent light scattering studies of supercooled CaKNO3 are described that have provided detailed tests of MCT both above and below Tc, including a cusp in the scaling time at Tc=105+or-5 degrees C. These experiments are reviewed, and comparisons with both the idealized and extended versions of MCT are described.

Original languageEnglish (US)
Article number006
Pages (from-to)A51-A62
JournalJournal of Physics: Condensed Matter
Volume6
Issue number23A
DOIs
StatePublished - Dec 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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