Improved Ligand-Field Theory with Effect of Electron-Phonon Interaction  

作　　者：MADong-Ping CHENJu-Ron 

机构地区：[1]DepartmentofAppliedPhysics,SichuanUniversity,Chengdu610065,China／／InternationalCentreforMaterialsPhysics,AcademiaSinica,Shenyang110015,China [2]DepartmentofAppliedPhysics,SichuanUniversity,Chengdu610065,China

出　　处：《Communications in Theoretical Physics》2005年第3期529-538,共10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, R1, R2, R'3, R'2, and R'1 lines, U band, ground-state zero-field-splitting (GSZFS), and ground-state g factors of ruby and/or GSGG: Cr3+ as well as thermal shifts of GSZFS, R1 line and R2 line of ruby have been calculated.The results are in very good agreement with the experimental data. Moreover, it is found that the value of cubic-field parameter given by traditional ligand-field theory is inappropriately large. For thermal shifts of GSZFS, R1 line and R2 line of ruby, several conclusions have also been obtained.

关 键 词：improved ligand-field theory electron-phonon interaction Stokes shift energy spectrum thermal shift g factor 

分 类 号：O412.3[理学—理论物理]