2 papers
cond-mat.dis-nn2004
Evidence of anomalous dispersion of the generalized sound velocity in glasses
B. Ruzicka, T. Scopigno, S. Caponi +7
The dynamic structure factor, S(Q,w), of vitreous silica, has been measured by inelastic X-ray scattering in the exchanged wavevector (Q) region Q=4-16.5 nm-1 and up to energies hw…
cond-mat.dis-nn2003
Low-energy excess of vibrational states in v-SiO2: the role of transverse dynamics
O. Pilla, A. Fontana, J. R. Goncalves +2
The study of the effects of the density variations on the vibrational dynamics in vitreous silica is presented. A detailed analysis of the dynamical structure factor, as well as of…