强耦合表面磁极化子的基态能量和有效质量  

The Ground State Energy and the Effective Mass of Strong-coupling Surface Magnetopolarons

作　　者：胡学宁[1] 肖景林[1] 

机构地区：[1]内蒙古民族大学物理系,内蒙古通辽028043

出　　处：《光电子．激光》2002年第12期1307-1310,共4页Journal of Optoelectronics·Laser

基　　金：内蒙自然科学基金资助项目 (990 0 9)

摘　　要：采用 L andau- Pekar变分理论研究强耦合表面磁极化子的性质。分别计算了强耦合表面磁极化子的基态能量和有效质量 ,并讨论了表面磁极化子的基态能量、振动频率和有效质量随磁场的变化关系。对 KCl晶体进行了数值计算 ,结果表明 ,强耦合表面磁极化子的振动频率和有效质量随磁场的增加而增加 。A Landau Pekar variational theory is employed to study the properties of strong coupling surface magnetopolaron.The ground state energy and the effective mass of strong coupling surface magnetopolaron are calculated respectively,and the relation of the ground state energy,the vibration frequency and the effective mass of surface magnetopolaron to magnetic field are discussed.Numerical calculations for KCl crystal,as an example,are performed.The result illustrates that the vibration frequency and the effective mass of a strong coupling surface magnetopolaron will increase with increasing magnetic field and the ground state energy will decrease with increasing magnetic field.

关 键 词：强耦合 表面磁极化子 基态能量 有效质量 振动频率 

分 类 号：O469[理学—凝聚态物理]