Phys. Rev. B 63, 060201(R) (2001) [4 pages]Methyl group dynamics in glassy systems: Crossover from quantum to classical regime
The problem of the crossover from quantum to classical dynamics for methyl group rotation in glassy systems is tackled in a quantitative way. A barrier distribution model, which was previously introduced to explain the neutron-scattering spectra in the low- and high-temperature limits, is extended now to the whole temperature range without introducing additional fitting parameters and it is checked in poly(vinyl acetate) with excellent results. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.63.060201
DOI:
10.1103/PhysRevB.63.060201
PACS:
61.43.Fs, 61.12.Ex, 61.41.+e
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