磁场中极性晶体板内的强耦合极化子  

STRONG COUPLING POLARON WITHIN POLAR CRYSTAL SLAB IN A MAGNETIC FIELD

作　　者：黄卓和[1] 陈传誉[1] 梁世东 

机构地区：[1]广州师范学院物理系

出　　处：《物理学报》1997年第4期715-723,共9页Acta Physica Sinica

基　　金：广州市科学技术委员会基金

摘　　要：采用推广的强耦合变分波函数方法，研究了在板面垂直方向施加磁场的极性晶体板内电子与体纵光学声子和表面光学声子强相互作用系统的能量和有效质量，得出了作为厚度和磁场强度函数的极化子的能量和有效质量表达式．对Ｃｕ２Ｏ材料作了数值计算，并讨论极化子的基态能。The strong coupling polaron in a slab of polar crystal in magnetic field is investigated by means of the extended the strong coupling variational theory of polaron. The energy and the effective mass of polaron are derived as functions of slab thickness and magnetic field. The numerical results of Cu 2O slab show that the influence of magnetic field reduces the energy of polaron and enhances the energy shift of electron, and that the surface optical modes are important to polaronic effect in a thin slab and in the presence of magnetic field.

关 键 词：极性 晶体 磁场 强耦合 极化子 

分 类 号：O737[理学—晶体学]