Quantum Confinement Effects in Dynamically Screened Quasi-One-DimensionalSystems  

作　　者：WANG Ting-Dong HUAI Ping 王廷栋;怀平(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800;University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800 [2]University of Chinese Academy of Sciences,Beijing 100049

出　　处：《Chinese Physics Letters》2013年第6期178-181,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2010CB934504;the National Natural Science Foundation of China under Grant No 10874197;the CAS Hundred Talents Program.

摘　　要：We theoretically study the quantum confinement effects on the self-energies of electrons and holes in quasi-onedimensional semiconductor systems.It is found that the effective Coulomb interactions are enhanced with the increase in lateral confinement and the decrease in confinement size.The single-particle self-energies of electrons and holes are calculated in dynamic plasmon pole approximation within the GW approximation,where G refers to Green’s function and W is the dynamically screened Coulomb interaction.The real and imaginary parts of the self-energies have a strong dependence on the effective Coulomb interactions.

关 键 词：interaction. APPROXIMATION imaginary 

分 类 号：O41[理学—理论物理]