,Quantum Confinement Effects in Dynamically Screened Quasi-One-Dimensional Systems

• 作 者: WANG Ting-Dong HUAI Ping
• 机 构: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800“,”University of
• 出 处: 中国物理快报（英文版）
• 发表日期: 2013年6期

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 Greens 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.