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Energy and stability of negatively charged trion in cylindrical quantum dot under temperature effect
Physica B: Condensed Matter ( IF 2.8 ) Pub Date : 2020-06-16 , DOI: 10.1016/j.physb.2020.412333
M. Chnafi , A. El Moussaouy , O. Mommadi , L. Belamkadem

The uncorrelated energy of negatively charged trion confined in a semiconductor cylindrical quantum dot (QD) under temperature effect is theoretically investigated using a variational procedure within the effective mass approximation. We have used a wave function satisfying for the strong confinement regime and also presenting well results for the weak confinement regimes. The trion confinement is described by a finite and infinite square potential wells under the temperature effect. Our findings show that the uncorrelated energy of the negatively charged trion is more important for the small size of the QD. We have found a strong dependence of negatively charged trion energy on the confinement potential. Besides, our numerical results have shown that the effect of temperature leads to an increase in uncorrelated energy. The temperature has a significant effect on the stability of the three non-bound charge carriers.



中文翻译:

温度作用下圆柱量子点中带负电的Trion的能量和稳定性

理论上,在有效质量近似范围内,采用变分程序研究了在温度效应下限制在半导体圆柱量子点(QD)中的带负电荷的Trion的不相关能量。我们使用了满足强约束条件的波动函数,也为弱约束条件提供了很好的结果。在温度效应下,有限元和无限方势阱描述了Trion约束。我们的研究结果表明,带负电荷的Trion的不相关能量对于较小的QD更为重要。我们发现带负电荷的Trion能量强烈依赖于约束电位。此外,我们的数值结果表明温度的影响导致不相关能量的增加。

更新日期:2020-06-23
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