晶格热振动对磁场中半无限极性晶体内表面磁极化子自陷能的影响  

EFFECT OF THERMAL LATTICE VIBRATION ON SELF- TRAPPING ENERGY OF THE SURFACE MAGNETOPO- LARON IN SEMI-INFINITE POLAR CRYSTAL WITHIN THE MAGNETIC FIELD

作　　者：额尔敦朝鲁[1] 肖景林[1] 

机构地区：[1]内蒙古民族大学,内蒙古通辽市028043

出　　处：《红外与毫米波学报》2002年第5期351-355,共5页Journal of Infrared and Millimeter Waves

基　　金：内蒙古自然科学基金 (批准号 990 0 9)资助项目~~

摘　　要：采用Huybrechts的线性组合算符法和变分法 ,研究了晶格热振动对磁场中半无限极性晶体内电子与表面光学 (SO)声子强耦合、与体纵光学 (LO)声子弱耦合体系的影响 ,得到了作为距离晶体表面的深度、磁场和温度函数的表面磁极化子的自陷能 .对AgCl晶体进行了数值计算 ,结果表明 ,不同支声子与电子相互作用对表面磁极化子自陷能的贡献以及它们随距离晶体表面的深度、磁场和温度变化的情况大不相同 .The effect of thermal lattice vibration on the system in semi infinite polar crystal within the magnetic field, which is weak coupling with bulk LO phonons and strong coupling with SO phonons, were studied. An expressions for the self trapping energy of the surface magnetopolaron as a function of the depth from the crystal surface, magnetic field and temperature were derived by using Huybrechts' linear combination operator and variational method. The numerical results of the self trapping energy for AgCl...

关 键 词：表面磁极化子 自陷能 磁场和温度依赖性 

分 类 号：O737[理学—晶体学]