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束缚磁极化子的性质
引用本文:陈英杰,肖景林.束缚磁极化子的性质[J].发光学报,2004,25(1):29-33.
作者姓名:陈英杰  肖景林
作者单位:内蒙古民族大学, 物理与机电学院, 内蒙古, 通辽, 028043
基金项目:国家自然科学基金资助项目 ( 10 3 470 0 4)
摘    要:采用线性组合算符和幺正变换方法分别导出弱、强耦合情形下束缚磁极化子的振动频率和基态能量.结果表明库仑场的存在使得磁极化子的基态能量的绝对值变小.

关 键 词:弱耦合  强耦合  束缚磁极化子  基态能量
文章编号:1000-7032(2004)01-0029-05
收稿时间:2003-04-24
修稿时间:2003年4月24日

Properties of the Bound Magnetopolaron
CHEN Ying-jie,XIAO Jing-lin.Properties of the Bound Magnetopolaron[J].Chinese Journal of Luminescence,2004,25(1):29-33.
Authors:CHEN Ying-jie  XIAO Jing-lin
Institution:College of Physics and Electromechanics, Inner Mongolia National University, Tongliao 028043, China
Abstract:With the development of solid science theory and experimental technology, the properties of the bound magnetic polarons(BMP)in crystals have been of considerable interest. Many investigators studied the properties of the BMP by means of various theoretical methods and experimental methods. Wollf et al. investigated the BMP in semimagnetic semiconductors and the BMP in dilute magnetic semiconductors by the optical experiments.Heiman et al. observed the variational model of the bound magnetic polaron and Roman spin flip line shape. Larsen studied the upper bound to the polaron ground state in a magnetic field using the Feyman path-integral method; Zhou solved the effective-mass equation and calculated the magnetopolaron binding energy in the ground state and in the excited state as well as the resonance energy of the magnetoplaron by means of the variational method. Wang and his co-workers studied the ionization energy of bound polaron in a magnetic field in asymmetric polar semiconductor heterostructures by using a modified Lee-Low-Pines variational method. Chen et al. investigated the properties of the impurity-bound polarons in a parabolic quanrum dot and in anisortopic quantum dots in magnetic fields and then studied impurity-bound polarons in double quantum wells in magnetic fields. Umehara presented a theory for the BMP in diluted magnetic semiconductors by a modified molecular-field approximation; Recently,Nagaku studied the bound excitonic magnetopolarons. In the early 1970s, Huybrechts investigated the internal excited state of the bulk optical polaron by using linear combination operator method. Some properties of the surface magnetopolaron in polyatomic polar crystals were studied by means of a linear combination operator and a perturbation method by one of the authors. However,no one studied the BMP with the linear combination operator and perturbation method so far. In this paper,we investigated the vibration frequency and the ground state energy of the BMP with this method. Using the parameters and the coupling constant of the AgCl crystal and the RbCl cvrystal for the weak coupling and the strong coupling, we calculated the vibration frequency and the ground state energy of the BMP. The results showed that the vibration frequency of the BMP increase with increasing the magnetic field, and the ground state energy does nearly not change when the magnetic field is increasing.
Keywords:weak coupling  strong coupling  bound magnetopolaron  ground state energy
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