Acoustic, optical, and interface phonons in BeTe/ZnSe superlattices

被引：3
|
作者：
Reshina, II [1 ]
Ivanov, SV [1 ]
Kosobukin, VA [1 ]
Sorokin, SV [1 ]
Toropov, AA [1 ]
机构：
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
来源：
PHYSICS OF THE SOLID STATE | 2003年 / 45卷 / 08期
关键词：
D O I：
10.1134/1.1602899
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Raman scattering in a number of BeTe/ZnSe type-II superlattices which share no common cations or anions in the interfaces was studied. Folded acoustic phonons; LO phonons of the first, second, and third order in the ZnSe layers; and Kliewer-Fuchs-type electrostatic interface phonons were observed when excited in resonance with the direct exciton transition in the ZnSe layers. Nonresonant excitation produced LO phonons in the ZnSe and BeTe layers and a high-frequency mechanical interface mode, assigned tentatively to a local vibration of the interface Be-Se bond. (C) 2003 MAIK "Nauka/Interperiodica".
引用
收藏
页码：1579 / 1585
页数：7
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