PHONON CONFINEMENT IN INAS/GASB SUPERLATTICES

被引：12
作者：
BERDEKAS, D
KANELLIS, G
机构：
[1] Department of Physics, University of Thessaloniki
来源：
PHYSICAL REVIEW B | 1991年 / 43卷 / 12期
关键词：
D O I：
10.1103/PhysRevB.43.9976
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Shell-model calculations of the zone-center phonons of InAs/GaSb superlattices reveal that their confinement characteristics depend on the direction of the atomic displacements and the relative orientation of the interface bonds. Similar behavior is found for certain modes even in the frequency range of bulk acoustic phonons. These findings are attributed to different elastic coupling between the two constituent layers. Interface modes localized at the two different interfaces Ga-As and In-Sb are discussed.
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收藏
页码：9976 / 9979
页数：4
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