%0 Journal Article
%T INFLUENCE OF ELECTRON-ELECTRON CORRELATION ON THE JAHN-TELLER-TYPE STRUCTURAL PHASE TRANSITIONS<br>电子关联作用对Jahn-Teller效应引起的结构相变的影响
%A WU JIAN-BI
%A <br>吴建斌
%J 物理学报
%D 1991
%I 
%X Starting from the Hamiltonian of Jahn-Teller effects and electron-electron correlation, we have studied the influence of electron correlation on the structural phase transitions due to the Jahn-Teller effects. By choosing different values of the parameters in the Hamiltonian, we concluded that there exist three possibilities as follows: (1) The system posesses only one structural phase transition, which corresponds to the symmetry breaking. (2) The system has a symmetry-breaking phase transition at high temperature, while the broken symmetry will be revived by decreasing the temperature. (3) The system has no phase transition throughout the whole temperature range.
%K 电子关联
%K J－T效应
%K 结构相变
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=433445AE96601F026DA458B22C395684&yid=116CB34717B0B183&vid=1371F55DA51B6E64&iid=9CF7A0430CBB2DFD&sid=DCB1FFC992CAE3A0&eid=F0C6824EC19052AD&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=3