| Optical Conductivity of Anisotropic Quantum Dots in Magnetic Fields |
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| 作者姓名： | 郭康贤 陈传誉 |
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| 作者单位： | DepartmentofPhysics,GuangzhouUniversity,Guangzhou510405 |
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| 摘 要： | Optical conductivity of anisotropic double-parabolic quantum dots is investigated with the memory-function approach, and the analytic expression for the optical conductivity is derived. With characteristic parameters pertaining to GaAs, the numerical results are presented. It is shown that: (1) the larger the optical phonon frequency wLO, the stronger the peak intensity of the optical conductivity, and the more asymmetric the shape of the optical conductivity; (2) the magnetic field enhances the optical conductivity for levels l=0 and l=1,with or without electron-LO-phonon interactions; (3) the larger the quantum dot thickness lz, the smaller the optical conductivity σ(w).
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| 关 键 词： | 光传导率 各向异性 量子点 磁场 |
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