https://doi.org/10.1007/s100510050510
The phonon dispersion in 6H-SiC investigated by inelastic neutron scattering
1
Institut Laue-Langevin, 38042 Grenoble, France
2
Institut für Theoretische Physik,
Universität Regensburg, 93040 Regensburg, Germany
Corresponding author: a dorner@ill.fr
Received:
28
April
1998
Accepted:
15
June
1998
Published online: 15 October 1998
Using coherent inelastic neutron scattering we have investigated the phonon
dispersion relation of bulk hexagonal 6H-SiC. The complete set of
phonon branches has been determined along the 
and 14 out of 36
branches
along the 
direction.
The experimental data are compared to ab initio
calculations for cubic 3C-SiC transposed to 6H-SiC.
Good agreement between theory and experiment is found for the 
direction.
The discrepancies encountered for the direction are interpreted
as evidence for a dependence of the dynamical response
in the SiC system on the stacking sequence.
PACS: 63.20.-e – Phonons in crystal lattices / 78.70.Nx – Neutron inelastic scattering
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
