Polar optical phonons in core-shell semiconductor nanowires

被引：6
|
作者：
Santiago-Perez, Dario G. [1 ,2 ]
Trallero-Giner, C. [3 ]
Perez-Alvarez, R. [2 ]
Chico, Leonor [4 ]
机构：
[1] Univ Sancti Spiritus Jose Marti Perez, Sancti Spiritus 62100, Cuba
[2] Univ Autonoma Estado Morelos, Cuernavaca 62209, Morelos, Mexico
[3] Univ Havana, Dept Theoret Phys, Havana 10400, Cuba
[4] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2014年 / 56卷
关键词：
Nanosystem; Oscillation mode; Phonon; Nanowire; Core-shell wire; QUANTUM WIRES; MODES; OSCILLATIONS; STRAIN; DOTS;
D O I：
10.1016/j.physe.2013.08.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We obtain the long-wavelength polar optical vibrational modes of semiconductor core-shell nanowires by means of a phenomenological continuum model. A basis for the space of solutions is derived, and by applying the appropriate boundary conditions, the transcendental equations for the coupled and uncoupled modes are attained. Our results are applied to the study of the GaAs-GaP core-shell nanowire, for which we calculate numerically the polar optical modes, analyzing the role of strain in the vibrational properties of this nanosystem. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：151 / 159
页数：9
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