| 纤锌矿AlN/GaN/InN/GaN/AlN量子阱的界面和局域光学声子 |
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| 引用本文： | 屈媛,班士良. 纤锌矿AlN/GaN/InN/GaN/AlN量子阱的界面和局域光学声子[J]. 内蒙古大学学报(自然科学版), 2010, 41(1) |
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| 作者姓名： | 屈媛 班士良 |
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| 作者单位： | 内蒙古大学物理科学与技术学院,呼和浩特,010021 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目(20070126001);;内蒙古自治区自然科学基金重点资助项目(20080404Zd02) |
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| 摘 要： | 基于介电连续模型和Loudon单轴模型,采用转移矩阵法讨论纤锌矿AlN/GaN/InN/GaN/AlN量子阱的界面和局域光学声子模.结果表明在GaN阱区引入InN纳米凹槽使纤锌矿AlN/GaN/AlN量子阱的光学声子发生较大变化.对给定波矢,在不同的频率范围内,存在两种界面光学声子模和两种局域光学声子模.声子色散关系和静电势分布表现出较AlN/GaN/AlN单量子阱更为复杂的形态.
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| 关 键 词： | 纤锌矿 量子阱 纳米凹槽 光学声子模 |
Interface and Confined Optical-phonon Modes in Wurtzite AlN/GaN/InN/GaN/AlN Quantum Wells |
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| QU Yuan,BAN Shi-liang. Interface and Confined Optical-phonon Modes in Wurtzite AlN/GaN/InN/GaN/AlN Quantum Wells[J]. Acta Scientiarum Naturalium Universitatis Neimongol, 2010, 41(1) |
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| Authors: | QU Yuan BAN Shi-liang |
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| Affiliation: | School of Physical Science and Technology/a>;Inner Mongolia University/a>;Hohhot 010021/a>;China |
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| Abstract: | Based on the dielectric continuum model and Loudon's single-axis model,the transfer matrix method is adopted to investigate interface and confined optical-phonon modes in wurtzite AlN/GaN/InN/GaN/AlN quantum wells.The results show that the introduction of an InN nanogroove in the center of a quantum well changes optical phonon modes of the system.For a given wave vector of phonons,there are two kinds of interface optical phonons and two kinds of confined optical phonons existing in certain frequency regions... |
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| Keywords: | wurtzite quantum well nanogroove optical phonon mode |
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