Optical Conductivity of Impurity-Doped Parabolic Quantum Wells in an Applied Electric Field |
| |
Authors: | GUO Kang-Xian and CHEN Chuan-Yu |
| |
Institution: | Department of Physics, Guihuagang Campus, Guangzhou University,
Guangzhou 510405, China |
| |
Abstract: | The optical conductivity of impurity-doped parabolic quantum wells in an applied electric field is
investigated with the memory-function approach, and the analytic
expression for the optical conductivity is derived. With
characteristic parameters pertaining to GaAs/Ga1-xAlxAs
parabolic quantum wells, the numerical results are presented. It
is shown that, the smaller the well width, the larger the peak
intensity of the optical conductivity, and the more asymmetric the
shape of the optical conductivity; the optical conductivity is
more sensitive to the electric field, the electric field enhances
the optical conductivity; when the dimension of the quantum well
increases, the optical conductivity increases until it reaches a
maximum value, and then decreases. |
| |
Keywords: | optical conductivity parabolic quantum wells impurity |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
| 点击此处可从《理论物理通讯》下载免费的PDF全文 |
|