非对称量子点极化子平均声子数的温度效应  

Temperature Effect on Mean Phonon Number of Strong-Coupling Polaron in an Asymmetry Quantum Dot

作　　者：白瑞锋[1] 惠丽梅 孙勇[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 [2]通辽发电总厂,内蒙古通辽028011

出　　处：《内蒙古民族大学学报（自然科学版）》2014年第3期252-254,共3页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古自治区高校科学研究项目(NJZY13174)

摘　　要：采用线性组合算符和么正变换方法研究了非对称量子点中强耦合极化子平均声子数的温度效应.导出了极化子平均声子数随有效受限强度、温度的变化关系.选择RbCl晶体进行数值计算,结果表明:声子平均数随有效受限强度、温度的升高而增加.The temperature effcet on mean phonon number of strong-coupling polaron in an asymmetry quantum dot are studied by using an linear combination operator and the unitary transformation methods. The relations of the mean phonon number of polaron with the effective confinement strongth and temperature are taken into consideration. Select-ing RbCl quantum dot, numerical calculations are performed and the results show that the mean phonon number will in-crease with increasing the effective confinement strength and temperature. Selecting different quantum dots, the mean number of phonon is an increasing function of coupling strength and temperature.

关 键 词：非对称量子点 线性组合算符 极化子 平均声子数 温度效应 

分 类 号：O469[理学—凝聚态物理]