Temperature and carrier-density dependent excitonic absorption spectra of semiconductor quantum wires  

作　　者：王廷栋 怀平 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Key Laboratory of Nuclear Radiation and Nuclear Energy Technology,Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2014年第1期12-15,共4页核技术（英文）

基　　金：Supported by the National Basic Research Program of China(No.2010CB934504);the National Natural Science Foundation of China(No.10874197)

摘　　要：In this paper,we present a theoretical study on excitonic absorption spectra of one-dimensional semiconductor quantum wires.The carrier-carrier scattering is treated by the second Bom approximation in the Markovian limit.The absorption spectra of different carrier densities and temperatures are discussed.The excitonic absorption peak position and width show complicated dependence on carrier density and temperature,indicating the importance of carrier-carrier scattering.The behavior can be understood by the cooperative effects of exchange self-energy and Coulomb correlation due to carrier-carrier scattering.In this paper, we present a theoretical study on excitonic absorption spectra of one-dimensional semiconduc- tor quantum wires. The carrier-carrier scattering is treated by the second Born approximation in the Markovian limit. The absorption spectra of different carrier densities and temperatures are discussed. The excitonic absorp- tion peak position and width show complicated dependence on cartier density and temperature, indicating the importance of carrier-carrier scattering. The behavior can be understood by the cooperative effects of exchange self-energy and Coulomb correlation due to cartier-carrier scattering.

关 键 词：半导体量子线 载流子密度 吸收光谱 依赖性 激子 温度 电信运营商 波散射 

分 类 号：O471[理学—半导体物理]