DISPERSION OF FOLDED PHONONS IN SI/SIXGE1-X SUPERLATTICES

被引：21

作者：

BRUGGER, H ^{[1
]}

REINER, H ^{[1
]}

ABSTREITER, G ^{[1
]}

JORKE, H ^{[1
]}

HERZOG, HJ ^{[1
]}

KASPER, E ^{[1
]}

机构：

[1] AEG TELEFUNKEN,FORSCHUNGSINST,D-7900 ULM,FED REP GER

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1986年 / 2卷 / 05期

关键词：

SPECTROSCOPY; RAMAN; -; Applications;

D O I：

10.1016/0749-6036(86)90010-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Zone folding effects on acoustic phonons in Si/Si//xGe//1// minus //x strained layer superlattices are studied by Raman spectroscopy. A quantitative explanation of the measured frequencies is given in terms of the elastic continuum theory. The scattering wavevector q//s is varied by use of different laser lines to probe directly the phonon dispersion curve in the superlattices. For large period samples q//s can be shifted through the new Brillouin zone boundary. We report on observation of a finite doublet splitting corresponding to the first zone-edge gap.

引用

页码：451 / 454

页数：4

共 11 条

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