Influence of pressure on quasielastic scattering in glasses: relationship to the boson peak.
We report unexpectedly strong variations in the quasielastic scattering (QES) intensity in glasses under pressure. Analysis of the data reveals strong correlations between pressure-induced changes in the QES intensity and the intensity of the boson peak. This observation emphasizes a direct relationship between these two components of the fast dynamics. In addition, we observe changes of the QES spectral shape that can be interpreted as pressure-induced variations in the underlying energy landscape.
Hong
L
L
Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA.
Begen
B
B
Kisliuk
A
A
Pawlus
S
S
Paluch
M
M
Sokolov
A P
AP