RbCl赝量子点中强耦合极化子基态能量的杂质效应  

The Impurity Effect of the Ground State Energy of Strong-Coupling Polaron in a RbCl Quantum Pseudodot

作　　者：孙丙西[1] 肖景林[2] SUN Bing-xi;XIAO Jing-lin(College of Physics and Electronic Information,Inner Mongolia University for Nationalities,Tongliao 028043,China;Institute of Condensed Matter Physics,Inner Mongolia University for Nationalities,Tongliao 028043,China)

机构地区：[1]内蒙古民族大学物理与电子信息学院,内蒙古通辽028043 [2]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）》2018年第6期464-466,492,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)

摘　　要：本工作研究了赝量子点晶体中强耦合极化子性质.利用Pekar类型的变分方法讨论了二维电子气的化学势和库仑杂质势的强度对赝量子点中强耦合极化子的基态能量的影响.对RbCl赝量子点晶体进行数值计算,结果显示二维电子气的化学势和库仑杂质势的强度是研究赝量子点中强耦合极化子性质的重要物理因素.The properties of strong-coupling polaron in a quantum pseudodot were studied. The influence of the chemical potential of the two-dimensional electron gat and the strength of the Coulomb impurity potential on the ground state energy of strong-coupling polaron in a quantum pseudodot was studied using the variational method of Pekar type. Numerical calculations for RbCl crystal in a quantum pseudodot were performed as an example. The two-dimensional electron gat and the strength of the Coulomb impurity potential were found to be important physical factors for studying the properties of strong-coupling polaron in the quantum pseudodot.

关 键 词：赝量子点 极化子 Pekar类型的变分方法 基态能量 

分 类 号：O469[理学—凝聚态物理]