The phonon dispersion in 6H-SiC investigated by inelastic neutron scattering

B. Dorner, H. Schober, A. Wonhas, M. Schmitt and D. Strauch

The European Physical Journal B: Condensed Matter and Complex Systems, 1998, vol. 5, issue 4, 839-846

Abstract: 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 Γ−A and 14 out of 36 branches along the Γ−M 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 Γ−A direction. The discrepancies encountered for the Γ−M direction are interpreted as evidence for a dependence of the dynamical response in the SiC system on the stacking sequence. Copyright EDP Sciences, Springer-Verlag 1998

Keywords: PACS. 63.20.-e Phonons in crystal lattices[:AND:] 78.70.Nx Neutron inelastic scattering (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1007/s100510050510

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