| 双三角量子阱中不对称性及掺杂浓度对电子拉曼散射的影响 |
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| 引用本文： | 谷冬霞,刘翠红,郭正丽,卢发. 双三角量子阱中不对称性及掺杂浓度对电子拉曼散射的影响[J]. 发光学报, 2010, 31(4): 477-483 |
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| 作者姓名： | 谷冬霞 刘翠红 郭正丽 卢发 |
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| 作者单位： | 广州大学物理与电子工程学院,广东,广州,510006;广州大学物理与电子工程学院,广东,广州,510006;广州大学物理与电子工程学院,广东,广州,510006;广州大学物理与电子工程学院,广东,广州,510006 |
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| 基金项目： | Research supported by Natural Science Foundation of China(60878002).国家自然科学基金 |
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| 摘 要： | 在有效质量近似下,从理论上研究了非对称双三角量子阱的拉曼散射。推导了导带子带间电子跃迁的微分散射截面表达式,以GaAs/AlxGa1-xAs材料为例进行了数值计算。结果表明,散射光谱不仅与掺杂浓度有关,而且与双量子阱的不对称性有关,随着量子阱不对称性的增加或掺杂浓度的减少,散射峰发生了红移。本工作对设计新型微电子和光电子器件有一定的指导意义。
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| 关 键 词： | 拉曼散射 耦合三角量子阱 子带间跃迁 微分散射截面 |
| 收稿时间： | 2009-09-02 |
| 修稿时间： | 2009-11-13 |
Impact of Asymmetry and Doping Density on Electron Raman Scattering in Triangular Double Quantum Wells |
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| GU Dong-xia,LIU Cui-hong,GUO Zheng-li,LU Fa. Impact of Asymmetry and Doping Density on Electron Raman Scattering in Triangular Double Quantum Wells[J]. Chinese Journal of Luminescence, 2010, 31(4): 477-483 |
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| Authors: | GU Dong-xia LIU Cui-hong GUO Zheng-li LU Fa |
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| Affiliation: | College of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China |
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| Abstract: | Electron Raman scattering (ERS) is investigated theoretically in asymmetric triangular double quantum wells (ATDQWs) within the framework of effective-mass approximation. The differential cross-section (DCS) is derived. Numerical calculations are performed for GaAs/AlxGa1-xAs ATDQWs. Results show that the ERS spectrum depends not only on the doping content but also on the asymmetry of ATDQWs. The spectrum yields a red shift with increasing the asymmetry of quantum wells or decreasing the Al doping content. |
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| Keywords: | Raman scattering double triangular quantum wells intersubband transition differential cross-section |
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