信阳师范学院学报（自然科学版）2013，Vol.26Issue(1)：32-36,5.DOI:10.3969/j.issn.1003-0972.2013.01.008
H4+分子离子的电声耦合与声子耦合及其杨-泰勒畸变的群论分析
Analysis of the Vibronic Coupling and Phonon Coupling and Jahn-Teller Distortion for H4+ Molecular Ions Using Group Theory
摘要
Abstract
The vibronic coupling, phonon coupling and Jahn-Teller distortion for H4+ molecular ions with the D4h symmetry configuration are studied using group theory and quantum theory in this paper. The study results show; H4+ molecular ions have five kinds of phonon states, they have the symmetries of a1g 、b1g、b2g、b2u and eu under the group D4h. The phonon state eu refers to infrared activity, the phonon states a1h, b1g and b2g refer to Raman activity, and the phonon state b2u is inactive. Among the phonon states of H4+ molecular ions, only the phonon states b1g and b2g are the active phonon states. The coupling between the phonon state eu and eu should generate the coupling phonon states a1g, b1g and b2g. The Jahn-Teller distortion of systems should occur because of the vibronic coupling of H4+ molecular ions, the Jahn-Teller distortion directions of the Eg⊕b1g and Eg⊕b2g systems are D4h→D2h, and the Jahn-Teller distortion direction of the Eg⊕(b1g + b2g) system is D4h→C2h. At the same time, the Jahn-Teller distortion should cause energy level splitting of H4+ molecular ions.关键词
H4+分子离子/电声耦合/声子耦合/杨-泰勒畸变Key words
H4+ molecular ions/vibronic coupling/phonon coupling/Jahn-Teller distortion分类
数理科学引用本文复制引用
冯胜奇,方海,邱胜桦,刘翠青..H4+分子离子的电声耦合与声子耦合及其杨-泰勒畸变的群论分析[J].信阳师范学院学报（自然科学版）,2013,26(1):32-36,5.基金项目
广东省自然科学基金项目(34613) （34613）
潮州市科研项目(2012H02) （2012H02）
韩山师范学院科研项目(LT201205) （LT201205）
