磁场对量子线中束缚极化子激发态性质的影响  

Influence of magnetic field on properties of excited state of bound polaran in quantum wires

作　　者：丁朝华[1] 苏莉[2] 何锐[1] 

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]通辽职业学院机电工程学院,内蒙古通辽028045

出　　处：《量子电子学报》2011年第6期748-752,共5页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(10347004);内蒙古自然科学基金(20080404MS0109)资助项目

摘　　要：采用Huybrenchts线性组合算符和Lee-Low-Pines(LLP)变换方法,研究了磁场和库仑场对抛物量子线中强耦合极化子激发态性质的影响,推导出了抛物量子线中强耦合束缚磁极化子的第一内部激发态能量、激发能量和振动频率。数值计算结果表明:抛物量子线中强耦合束缚磁极化子的第一内部激发态能量和激发能量及振动频率均随约束强度、回旋频率的增加而增大;第一内部激发态能量随库仑束缚势的增加而减少,激发能量和振动频率随库仑束缚势的增加而增强。With Huybrenchts＇s linear combination operator and the Lee-Low-Pines（LLP） transformation methods, properties of excited state of strong-coupling magnetopolaron in parabolic quantum wires are studied. The relations of the first internal excited energy, excitation energy and vibration frequency in parabolic quantum wires with the Coulomb bound potential, confinement strength and cyclotron frequency axe presented. The numerical results indicate that the first internal excited energy, excitation energy and vibration frequency increase with increasing of confinement strength and the cyclotron frequency. The excitation energy and vibration frequency are increasing functions of the Coulomb bound potential, and the first internal excited energy decreases with increasing of the Coulomb bound potential.

关 键 词：光电子学 量子线 线性组合算符 束缚磁极化子 激发态 

分 类 号：O469[理学—凝聚态物理]