Time-resolved optical Kerr effect on a fragile glass-forming liquid: Test of different mode coupling theory aspects

Citation
R. Torre et al., Time-resolved optical Kerr effect on a fragile glass-forming liquid: Test of different mode coupling theory aspects, EUROPH LETT, 52(3), 2000, pp. 324-329
Citations number
27
Categorie Soggetti
Physics
Journal title
EUROPHYSICS LETTERS
ISSN journal
02955075 → ACNP
Volume
52
Issue
3
Year of publication
2000
Pages
324 - 329
Database
ISI
SICI code
0295-5075(200011)52:3<324:TOKEOA>2.0.ZU;2-Y
Abstract
The dynamics of the fragile glass-forming liquid m-toluidine is investigate d by time-resolved optical Kerr effect. A heterodyne detection technique al lows to analyze the signal over four decades in time (10(-13) s to 10(-9) s ), in the temperature range 250 K-295 K. The results of data analysis remar kably agree with the predictions of the idealised mode coupling theory (MCT ). Some parameters related to that theory are here determined for the first time; also the material-dependent parameters lambda = 0.77 +/- 0.02 and T- c = 220 +/- 5 K can be independently and consistently determined from three different dynamical regimes.