Optical vibration modes in spherical multilayer nanostructures

被引：3
|
作者：
Xing, Y.
Liang, X. X. [1 ]
Wang, Z. P.
机构：
[1] Inner Mongolia Univ, Dept Phys, Hohhot 010021, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2013年 / 162卷
关键词：
Multi layer nanostructure; Semiconductors; Electron-phonon interaction; Optical vibration mode; DOT-QUANTUM-WELL; SEMICONDUCTOR NANOCRYSTALS; PHONON INTERACTION; CDSE; CDS/HGS/CDS; SHELL;
D O I：
10.1016/j.ssc.2013.03.009
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using the dielectric continuum approach, we study the optical vibration modes in a polar spherical multilayer nanostructure hosted in a non-polar material. The dispersion relation and the corresponding electron-phonon interaction Hamiltonians for interface optical (IO) or surface optical (SO) phonons are derived. As a typical case, the numerical results for the CdSe/ZnS/CdSe spherical multilayer nanostructure are given. The frequency and electric potential characteristics of 5 branches of IO/SO phonon modes are analyzed. The results show that the electron-phonon coupling related to the IO modes with higher frequencies and the SO modes are more significant. (C) 2013 Elsevier Ltd. All rights reserved.
引用
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页码：13 / 17
页数：5
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