Optical Conductivity of Anisotropic Quantum Dots in Magnetic Fields
GUO Kang-Xian, CHEN Chuan-Yu
Department of Physics, Guangzhou University, Guangzhou 510405
Optical Conductivity of Anisotropic Quantum Dots in Magnetic Fields
GUO Kang-Xian;CHEN Chuan-Yu
Department of Physics, Guangzhou University, Guangzhou 510405
关键词 ：
74.25.Gz ,
78.67.Hc ,
74.25.Ha
Abstract ： 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 ωLO , 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(ω).
Key words ：
74.25.Gz
78.67.Hc
74.25.Ha
出版日期: 2005-01-01
:
74.25.Gz
(Optical properties)
78.67.Hc
(Quantum dots)
74.25.Ha
(Magnetic properties including vortex structures and related phenomena)
引用本文:
GUO Kang-Xian;CHEN Chuan-Yu. Optical Conductivity of Anisotropic Quantum Dots in Magnetic Fields[J]. 中国物理快报, 2005, 22(1): 191-194.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I1/191
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2005, Vol. 22 
