Energy Spectrum, g Factors, Strain-Induced Level-Splittings and R-Line Thermal Shift of MgO:V^(2+)  

作　　者：ZHANG Zheng-Jie MA Dong-Ping 

机构地区：[1]Department of Physics, Chengdu University of Technology, Chengdu 610059, China [2]Department of Applied Physics, Sichuan University, Chengdu 610065, China

出　　处：《Communications in Theoretical Physics》2008年第8期511-516,共6页理论物理通讯（英文版）

摘　　要：Traditional ligand-field theory has to be improved by taking into account both pure electronic contribution and electron-phonon interaction one （including lattice-vibrational relaxation energy）. By means of improved ligand-field theory, the R line, t^322T1 and t^322T2 lines, t^22（^3T1）e^4T2, t^22（^3T1）e^4T1 and t2e^2（^4A2）4T1 bands, g factors of t^32 ^4A2 and t32E, four strain-induced level-splittings and R-line thermal shift of MgO：V^2＋ have been calculated. The results are in very good agreement with the experimental data. It is found that for MgO：V^2＋, the contributions due to electronphonon interaction （EPI） come from the first-order term; the contributions from the second-order and higher terms are insignificant. In thermal shift of R line of MgO：V^2＋, the temperature-dependent contribution due to EPI is dominant. The results obtained in this work may be used in theoretical calculations of other effects of EPI.

关 键 词：improved ligand-field theory electron-phonon interaction energy spectrum strain-induced split-ting thermal shift g factor 

分 类 号：O43[机械工程—光学工程]