ZONE-FOLDED LA PHONONS IN AMORPHOUS SEMICONDUCTOR SUPERLATTICES

XU JUN; CHEN KUN-JI; HAN HE-XIANG; LI GUO-HUA; WANG ZHAO-PING

doi:10.7498/aps.41.1938

Abstract
In this paper, we report the systematic results of folded LA phonon modes in the a-Si: H/a-SiN:H and a-Si: H/a-SiC:H periodic superlattices. We use the elastic continuum model to obtain the theoretical results, which are in good agreement with the experimental values. Finally, the problem of the existence of frequency-gap at the center of the Brillouin zone is briefly discussed.
Authors and contacts
XU JUN²,

CHEN KUN-JI²,

HAN HE-XIANG¹,

LI GUO-HUA¹,

WANG ZHAO-PING¹

(1)半导体超晶格国家重点实验室,北京100083;中国科学院半导体研究所,北京100083; (2)南京大学物理系固体微结构物理实验室,南京210008
References

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Vol. 41, Issue 12 - 1992-06-20

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ZONE-FOLDED LA PHONONS IN AMORPHOUS SEMICONDUCTOR SUPERLATTICES

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