Hydrostatic pressure and electric field effects on the normalized binding energy in asymmetrical quantum wells

被引：0
|
作者：
E. C. Niculescu
N. Eseanu
机构：
[1] “Politehnica” University of Bucharest,Physics Department I
来源：
The European Physical Journal B | 2010年 / 75卷
关键词：
Hydrostatic Pressure; Turning Point; Quantum Well; Asymmetry Parameter; Quantum Well Structure;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We have investigated the simultaneous effects of the hydrostatic pressure and electric field on the ground subband level and on normalized binding energy of an on-center donor in asymmetrical GaAs/AlGaAs quantum wells within the effective-mass approximation and a variational approach. We found that the well size at which the impurity energy changes from positive to negative value (turning point) strongly depends on the asymmetry and hydrostatic pressure. As a key result, we suggest that the study of the normalized binding energy for various values of the electric field in direct and inverse polarization regimes can be used to feel the quantum well asymmetry and to unambiguously find out the effective pressure acting on a given heterostructure.
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页码：247 / 251
页数：4
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