Donor-related optical absorption spectra for a GaAs-Ga0.7Al0.3As double quantum well under hydrostatic pressure and applied electric field effects

被引：22
|
作者：
Morales, A. L. [1 ]
Raigoza, N. [1 ]
Duque, C. A. [1 ]
机构：
[1] Univ Antiquia, Inst Fis, Medellin, Colombia
来源：
BRAZILIAN JOURNAL OF PHYSICS | 2006年 / 36卷 / 3B期
关键词：
electric field; hydrostatic pressure; quantum well; absorption spectra;
D O I：
10.1590/S0103-97332006000600017
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The hydrostatic-pressure and applied electric field dependencies of the binding energy and the optical-absorption spectra, associated with transitions between the n = I valence subband and the donor-impurity band, in symmetrical and asymmetrical GaAs-Ga1-xAlxAs double quantum-well structures are calculated using a variational procedure within the effective-mass approximation. Results are obtained for different well and barrier widths, shallow-donor impurity positions, hydrostatic pressure, and applied electric field.
引用
收藏
页码：862 / 865
页数：4
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