Dispersion Theory of Polaron in a Parabolic Quantum Dot at Finite Temperatures  

作　　者：孙尔林 冯东海 贾天卿 周侃 孙真荣 

机构地区：[1]State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University [2]State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics

出　　处：《Communications in Theoretical Physics》2011年第2期345-348,共4页理论物理通讯（英文版）

基　　金：Supported by Shanghai Leading Academic Discipline Project(B408);National Key Project for Basic Research of China under Grant Nos.2010CB923203,2006CB806006,and 2006CB921105;National Natural Science Foundation of China under Grant Nos.10904038 and 10874044;Shanghai Municipal Science and Technology Commission under Grant Nos.09JC1404700 and 08PJ1404800

摘　　要：By using the dispersion theory instead of the Frohlich Hamiltonian, the polaron energy in a quantum aot with a parabolic confinement potential is investigated at finite temperatures. It is found that the self-trapping energy of the polaron decreases with the increasing temperature, and the temperature effect is more obvious in quantum dots with weaker confinement.

关 键 词：SEMICONDUCTORS quantum dots electron-phonon interactions 

分 类 号：O471.1[理学—半导体物理] O413.3[理学—物理]