非对称Gaussian限制势量子阱中强耦合极化子的性质  

Properties of Strong-Coupling Polaron in an Asymmetrical Gaussian Confinement Potential Quantum Well

作　　者：肖景林[1] 

机构地区：[1]内蒙古民族大学凝聚态物理研究所,内蒙古通辽028043

出　　处：《内蒙古民族大学学报（自然科学版）》2015年第5期369-371 375,375,共4页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：国家自然科学基金资助项目(11464033;11464034)

摘　　要：理论上研究了非对称Gaussian限制势Cs I量子阱中强耦合极化子的性质,采用线性组合算符和LLP变换方法导出了非对称Gaussian限制势量子阱中强耦合极化子的振动频率和平均声子数与非对称Gaussian受限势量子阱的势垒高度和非对称Gaussian受限势的范围的关系.通过数值计算,结果表明极化子振动频率和声子平均数是Gaussian受限势的范围的减函数,而它们是量子阱的势垒高度的增函数.The properties of strong-coupling polaron in an asymmetrical Gaussian confinement potential CsI quan-tum well are theoretically studied. The relations of the polaron’s vibrational frequency and the mean number of pho-nons on the barrier height of the quantum well and the range of the Gaussian confinement potential are derived by us-ing the linear combination operator and LLP transformation methods. The numerical results indicated that the polar-on’s vibrational frequency and the mean number of phonons are a decreasing function of the range of the Gaussian confinement potential, whereas they are an increasing one of the barrier height of the quantum well.

关 键 词：非对称Gaussian限制势量子阱 极化子 线性组合算符 振动频率 

分 类 号：O471.1[理学—半导体物理]