极化子速率对量子点中磁极化子性质的影响  

Influence of speed of polaron on properties of magnetopolaron in quantum dots

作　　者：戈君[1] 王娜[1] 赵翠兰[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

出　　处：《量子电子学报》2011年第1期104-109,共6页Chinese Journal of Quantum Electronics

基　　金：内蒙古高等学校科研项目(NJZY08085)

摘　　要：采用改进的线性组合算符及么正变换的方法研究了极化子速率对量子点中强耦合磁极化子性质的影响。在考虑Rashba自旋轨道耦合相互作用影响下,导出了量子点中强耦合磁极化子的振动频率、基态能量、有效质量和相互作用能随极化子速率的变化关系。对RbCl晶体进行数值计算,结果表明:量子点中强耦合磁极化子的振动频率、基态能量、有效质量随极化子速率的增加而增大,相互作用能随极化子速率的增加而减少。Effects of speed of polaron on properties of a strong-coupling magneopolaron in a quantum dot are studied by using improved linear combination operator and the unitary transformation methods. Relations of the vibrational frequency, ground state energy, effective mass and interaction energy of a strong-coupling magnetopolaron considering the influence of Rashba effect, which is brought by the spin-orbit interation, are derived in the quantum dots with speed of polaron. Numerical calculations for RbCI crystal are performed and the results show that the vibration frequency, ground state energy and effective mass of the strong- coupling magnetopolaron in a quantum dot increase with increasing of speed of poloran, and interaction energy of magnetopolaron decreases

关 键 词：光电子学 极化子速率 改进的线性组合算符 磁极化子 量子点 

分 类 号：O469[理学—凝聚态物理]