ACOUSTIC-PHONON DISPERSION IN CDTE AT 7.5 GPA

Authors
KRISCH MH MERMET A SANMIGUEL A SETTE F MASCIOVECCHIO C RUOCCO G VERBENI R
Citation
Mh. Krisch et al., ACOUSTIC-PHONON DISPERSION IN CDTE AT 7.5 GPA, Physical review. B, Condensed matter, 56(14), 1997, pp. 8691-8694
Citations number
15
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
56
Issue
14
Year of publication
1997
Pages
8691 - 8694
Database
ISI
SICI code
0163-1829(1997)56:14<8691:ADICA7>2.0.ZU;2-V
Abstract
The dispersion of longitudinal acoustic phonons has been measured by i nelastic x-ray scattering in the sodium-chloride phase of CdTe at 7.5 GPa. A substantial increase of the phonon frequencies with respect to the dispersion curve at ambient pressure is observed in the momentum t ransfer region Q=3-10 nm(-1): This corresponds to an increase of the s ound velocity from 3100 m/s to 5100+/-300 m/s, in good agreement with extrapolations based on the equation of state.