Microscopic Many-Body Effects on Intersubband Resonance in Quantum Well  

作　　者：张拥华 曹俊诚 

机构地区：[1]State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Alicrosystem and Information Technology Chinese Academy of Sciences, Shanghai 200050

出　　处：《Chinese Physics Letters》2005年第10期2696-2699,共4页中国物理快报（英文版）

基　　金：Supported by the National Fund for Distinguished Young Scholars of China （60425415）, the Major Project of the National Natural Science Foundation of China （10390162）. the Special Funds for Major State Basic Research of China （G20000683）, and the Shanghai Municipal Commission of Science and Technology （03JC14082）.

摘　　要：Considering the Coulomb many-body interactions, we investigate the intersubband optical processes of the quantum well by using the semiconductor Bloch equations. We calculate the evolution of intersubband absorption spectral line shape as a function of lattice temperature and electron density. It is found that the coupling of intersubband plasmons can reduce and red-shift the lower energy resonance, simultaneously enhance and blue-shift the higher energy resonance. The dependence of cascading resonances on temperature and electron density is also discussed.Considering the Coulomb many-body interactions, we investigate the intersubband optical processes of the quantum well by using the semiconductor Bloch equations. We calculate the evolution of intersubband absorption spectral line shape as a function of lattice temperature and electron density. It is found that the coupling of intersubband plasmons can reduce and red-shift the lower energy resonance, simultaneously enhance and blue-shift the higher energy resonance. The dependence of cascading resonances on temperature and electron density is also discussed.

关 键 词：OPTICAL-ABSORPTION TEMPERATURE 

分 类 号：O47[理学—半导体物理]