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conference paper
Interpretation of the vibrational spectra of vitreous silica
1998
Proceedings of the Vii Italian-Swiss Workshop Advances in Computational Materials Science Ii
The vibrational properties of vitreous silica are discussed in light of recent results obtained using a first-principle approach. The high-frequency doublet appearing in the inelastic neutron spectrum results from different local modes of the tetrahedral subunits and is not related to the longitudinal-optic-transverse-optic (LO-TO) splitting observed with infrared spectroscopy. The highest energy component of this doublet is suppressed in infrared spectra, which show a marked LO-TO splitting associated to the lowest energy component of the doublet.
Type
conference paper
Authors
Publication date
1998
Published in
Proceedings of the Vii Italian-Swiss Workshop Advances in Computational Materials Science Ii
Volume
61
Start page
13
End page
18
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
October 8, 2009
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