量子阱中极化子的电磁场效应  

Electric and Magnetic Field Effects on Polaron in a Quantum Well

作　　者：梁世东[1] 陈传誉[1] 黄卓和[1] 

机构地区：[1]广州师范学院物理系

出　　处：《广州师院学报（自然科学版）》1996年第1期9-16,共8页

摘　　要：本文应用ｌａｒｓｅｎ的算符代数方法，结合变分波函数，研究电磁场对量子阱中极化子的影响，给出系统基态能量与阱宽和电磁场的关系。对ＧａＡｓ／ＡｌＡｓ量子阱作了数值计算，结果显示，电场和磁场都使界面光学模对极化子自能的贡献增大。Using a combinative method of variational wave function with harmonic oscillator operator algebra, the authors investigate the influence of electric and magnetic fields on a polaron in the GaAs/AlAs quantum well. The ground state energy of the system is obtained as a function of the well width and the strength of electric and magnetic fields. Results show that the electric and magnetic fields enhance the contribution of the interface optical phonon to the polaronic self energy.

关 键 词：极化子 量子阱 电磁场效应 基态能量 阱宽 伴光学声子模 算符代数方法 

分 类 号：O471.3[理学—半导体物理]