光散射研究薄膜超晶格中声学声子传播特性  

LIGHT-SCATTERING INVESTIGATION OF PROPAGATION BEHAVIOR OF ACOUSTIC PHONONS FROM FILMS AND SUPERLATTICE MULTILAYERS

作　　者：张杏奎[1] 夏桦[1] 

机构地区：[1]南京大学物理系

出　　处：《物理学进展》1993年第1期243-254,共12页Progress In Physics

摘　　要：本文回顾了近年来我们在薄膜和超晶格多层膜中,声学表面和体元激发的光散射研究工作,着重介绍了与这些低维材料的微结构相关的声学声子的传播特性的研究,系统地总结了我们所提出和发展的多层调制结构薄膜中声学波传播的理论,以及这些理论对周期,准周期多层膜中所表现出的反常的声子特性的解释。This paper has reviewed our research work of recent years on bulk and surface acoustic excitations in films and superlattice multilayers via light-scattering techniques. The investigation of propagation behaveor from the acoustic phonons relevant to microstructures of such low-dimensional matemals is emphatically introduced . It has summarized the theories of acoustic-wave propagation in modulated multilayer structures , which were presented and developed by ourselves ,and it has also shown how to apply these theories to explain anomalous phonon behaviors in periodic and quasiperiodic multilayers.

关 键 词：光散射 薄膜 超晶格 声子传播 

分 类 号：O484.4[理学—固体物理]