| 重空穴轻空穴共同作用下GaN柱形量子点的Franz-Keldysh振荡 |
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| 引用本文： | 高海燕,李聪,张天杰,袁超.重空穴轻空穴共同作用下GaN柱形量子点的Franz-Keldysh振荡[J].江西师范大学学报(自然科学版),2012,0(1):83-86. |
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| 作者姓名： | 高海燕 李聪 张天杰 袁超 |
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| 作者单位： | 1. 华北水利水电学院数学与信息科学学院, 河南 郑州 450011; 2. 河南农业大学理学院, 河南 郑州 450002 |
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| 基金项目： | 国家自然科学基金(10947162);河南省基础与前沿技术研究计划(112300410261)资助项目 |
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| 摘 要： | 利用包络函数和有效质量理论计算了GaN柱形量子点的电调制反射谱, 并用Airy函数表示其柱坐标下薛定谔方程的解. 着重分析了重空穴轻空穴共同作用下的GaN柱形量子点电调制反射谱的Franz-Keldysh振荡, 并比较了与重空穴、轻空穴单独作用下波形的不同. 随着调制电压逐渐增大, 重空穴轻空穴共同作用下的电调制反射谱与其单独作用时一样出现Stark频移, 即量子限制Stark频移.
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| 关 键 词： | 量子点 Franz-Keldysh振荡 量子限制Stark频移 |
The Franz-Keldysh Oscillations of Cylindrical GaN Quantum Dot of Light Hole and Heavy Hole Contributed Toghther |
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| GAO Hai-yan,LI Cong,ZHANG Tian-jie,YUAN Chao.The Franz-Keldysh Oscillations of Cylindrical GaN Quantum Dot of Light Hole and Heavy Hole Contributed Toghther[J].Journal of Jiangxi Normal University (Natural Sciences Edition),2012,0(1):83-86. |
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| Authors: | GAO Hai-yan LI Cong ZHANG Tian-jie YUAN Chao |
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| Institution: | 1.College of Mathematics and Information Science,North China University of Water Resources and Electric Power,Zheng-zhou Henan 450011,China;2.College of Sciences,He’nan Agricultural University,Zhengzhou Henan 450002,China) |
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| Abstract: | The electroreflectrance spectrum of cylindrical GaN quantum dot have been calculated in the effective-mass approximation and envelop function.The solution of the Schrdinger equation under cylindrical coordinate system can be expressed in the term of Airy function.Under the contribution of light hole and heavy hole,the electroreflectrance spectra exhibits Franz-Keldysh oscillation characteristic and its difference was compared with the spectra with the con-tribution of light hole(or heavy hole) separately.It is found that Franz-Keldysh oscillations exhibit Stark shift when the electric field intensity increased with the contribution of light hole(or heavy hole) separately or of both. |
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| Keywords: | quantum dot Franz-Keldysh oscillation quantum-confined Stark shift |
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