| 有限宽度的ZnSe/ZnTe应变超晶格中LA声子的拉曼频移(英文) |
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| 引用本文： | 郭子政,梁希侠.有限宽度的ZnSe/ZnTe应变超晶格中LA声子的拉曼频移(英文)[J].光散射学报,2002,14(3):134-139. |
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| 作者姓名： | 郭子政 梁希侠 |
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| 作者单位： | 1. 内蒙古大学物理系,呼和浩特,010021;内蒙古师范大学物理系,呼和浩特,010022
2. 内蒙古大学物理系,呼和浩特,010021 |
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| 摘 要： | 考虑到真实超晶格系统的有限宽度会造成晶格的非周期性 ,我们修正了用来决定拉曼频移峰值位置的公式中的倒格矢一项。在线性驰豫应变假设下给出了应变超晶格纵向原子间距的几何模型。在上述理论基础上计算了有限宽度的ZnSe/ZnTe应变超晶格LA声子的拉曼频移。数值计算结果同现有实验结果作了比较 ,符合很好。
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| 关 键 词： | 超晶格 声子 拉曼频移 应变 |
Raman Shifts of the LA Phonons in a ZnSe/ZnTe Finite Strained Superlattice |
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| Abstract.Raman Shifts of the LA Phonons in a ZnSe/ZnTe Finite Strained Superlattice[J].Chinese Journal of Light Scattering,2002,14(3):134-139. |
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| Authors: | Abstract |
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| Abstract: | The formula for determining the peak positions of Raman shifts of the strained superlattices is modified by considering the non-periodicity of the realistic superlattice caused by the finite size. A model of linear strain relaxation is proposed to obtain the interatomic longitudinal spacings of the strained superlattice. Based on these works, a calculation for the Raman shifts of LA phonons on a ZnSe/ZnTe superlattice is performed and the result is in good agreement with the available experiment data. |
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| Keywords: | Superlattice Phonons Raman shifts Strain |
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