TY  - JOUR
AU  - Ruffle, B.
AU  - Ayrinhac, S.
AU  - Courtens, E.
AU  - Vacher, R.
AU  - Foret, M.
AU  - Wischnewski, A.
AU  - Buchenau, U.
TI  - Scaling the temperature-dependent boson peak of vitreous silica with the high-frequency bulk modulus derived from Brillouin scattering data
JO  - Physical review letters
VL  - 104
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-10522
SP  - 067402
PY  - 2010
N1  - Record converted from VDB: 12.11.2012
AB  - The position and strength of the boson peak in silica glass vary considerably with temperature T. Such variations cannot be explained solely with changes in the Debye energy. New Brillouin-scattering measurements are presented which allow determining the T dependence of unrelaxed acoustic velocities. Using a velocity based on the bulk modulus, scaling exponents are found which agree with the soft-potential model. The unrelaxed bulk modulus thus appears to be a good measure for the structural evolution of silica with T and to set the energy scale for the soft potentials.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000274445100047
DO  - DOI:10.1103/PhysRevLett.104.067402
UR  - https://juser.fz-juelich.de/record/10522
ER  -