[1]杨双波.非对称耦合双量子阱中的激子态及结合能[J].南京师范大学学报(自然科学版),2016,39(03):46.[doi:10.3969/j.issn.1001-4616.2016.03.008]
　Yang Shuangbo.Exciton State and Its Binding Energy for a CoupledAsymmetric Double Quantum Well System[J].Journal of Nanjing Normal University(Natural Science Edition),2016,39(03):46.[doi:10.3969/j.issn.1001-4616.2016.03.008]
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非对称耦合双量子阱中的激子态及结合能()
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《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第39卷
期数:
2016年03期
页码:
46
栏目:
·物理学·
出版日期:
2016-09-30

文章信息/Info

Title:
Exciton State and Its Binding Energy for a CoupledAsymmetric Double Quantum Well System
文章编号:
1001-4616（2016）03-0046-08
作者:
杨双波
南京师范大学物理科学与技术学院，江苏省大规摸复杂系统数值模拟省重点实验室，江苏 南京 210023
Author(s):
Yang Shuangbo
Jiangsu Key Laboratory for NSLSCS，School of Physics and Technology，Nanjing Normal University，Nanjing 210023，China
关键词:
量子阱; 激子结合能; 有效质量近似; 重/轻空穴
Keywords:
quantum well; binding energy of exciton; effective mass approximation; heavy/light hole
分类号:
O413.1
DOI:
10.3969/j.issn.1001-4616.2016.03.008
文献标志码:
A
摘要:
本文在有效质量近似下，利用变分法计算了AlxGa1-xAs/GaAs/AlxGa1-xAs/GaAs/AlxGa1-xAs非对称耦合双量子阱系统中重/轻空穴激子态的结合能，研究了重/轻空穴激子态的结合能随右阱宽的变化关系；计算了在重/轻空穴激子态下电子与重/轻空穴沿z方向的平均距离及在垂直于z轴的平面内的平均距离，研究了它们随右阱宽的变化关系；计算了给定激子态下电子与重/轻空穴在空间各区域的分布几率，研究了空间各区域分布几率随右阱宽变化的关系. 计算中考虑了电子与重/轻空穴在势阱与势垒中具有不同的有效质量，计算结果合理，令人信服.
Abstract:
Within effective mass approximation，and by variational method we calculated the binding energies for the heavy hole exciton and light hole exciton for a coupled asymmetric double quantum well system，we studied how the binding energies change with the increase of the width of the right potential well；at a given exciton state，we calculated the expectation value of the distance in z direction and the distance in the plane perpendicular to z axis between electron and the hole（H/L）；we studied the behavior of the change of the distances as we increase the width of the right potential well；at a given exciton state，we calculated the probability distribution in space region for the electron and hole（H/L）pair appeared，we studied how the probability changes with increasing the width of the right potential well. The results are reasonable and very convincing.

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备注/Memo

备注/Memo:
收稿日期：2015-10-19.　
通讯联系人：杨双波，博士，教授，研究方向：低维量子系统. E-mail：yangshuangbo@njnu.edu.cn
更新日期/Last Update: 2016-09-30