Fe^(2+)离子在III-V半磁半导体近红外光谱中的动态Jahn-Teller效应  

Dynamic Jahn-Teller Effect in the Near-infrared Spectra of Fe^(2+) Ions in III-V Semimagnetic Semiconductors

作　　者：周一阳[1] 

机构地区：[1]四川师范大学固体物理研究所,四川成都610066

出　　处：《四川师范大学学报（自然科学版）》2005年第4期444-447,共4页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金(10247006);四川省应用基础;四川省教育厅重点科研基金资助项目

摘　　要：介绍了3d4/3d6离子在立方晶体场中动态Jahn-Teller矩阵的推导,分析了动态Jahn-Teller效应对Fe2+在III-V半磁半导体InP和GaP中光谱的影响,计算结果与实验符合,表明在Fe2+半磁半导体中,比经典晶体场理论分析多出的许多分裂谱线是Fe2+离子与半导体晶格间的动态Jahn-Teller效应引起,还预测了其他Jahn-Teller效应分裂谱.The dynamic Jahn-Teller Hamihonian matrices for the 3d^4/3d^6 ions in cubic crystal field are introduced, and the role of this effect on the near-infrared spectra of Fe^2＋ ions in Ⅲ-Ⅴ eonduetom InP and GaP is studied. The good agreement between the present results and the experimental observations indicates that the near-infrared spectnan levels of Fe^2＋ ions in InP and GaP, which do not exist in the standard crystal-field theory, are due to the dynamic Jahn-Teller effect interaction of the Fe^2＋ ion with the lattice of InP and GaP. In addition, some theoretical Jahn-Teller splitfings presented are in need of further theoretical and experimental studies.

关 键 词：动态Jahn-Teller效应 近红外光谱 Fe^2+离子 INP GAP 

分 类 号：O433.5[机械工程—光学工程] O482.3[理学—光学]