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

被引：15
|
作者：
Dorner, B
Schober, H
Wonhas, A
Schmitt, M
Strauch, D
机构：
[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[2] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
来源：
EUROPEAN PHYSICAL JOURNAL B | 1998年 / 5卷 / 04期
关键词：
D O I：
10.1007/s100510050510
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
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 Gamma-A and 14 out of 36 branches along the Gamma-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 Gamma-A direction. The discrepancies encountered for the Gamma-M direction are interpreted as evidence for a dependence of the dynamical response in the SiC system on the stacking sequence.
引用
收藏
页码：839 / 846
页数：8
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