一维超Ising模型  

One Dimensional Super-Ising Model with the Phase Transition

作　　者：叶鹏[1] 阮芳芳[1] 柯见洪[1] 郑亦庄[1] 

机构地区：[1]温州师范学院物理与电子信息学院,浙江温州325027

出　　处：《温州师范学院学报》2004年第2期63-66,共4页Journal of Wenzhou Teachers College(Philosophy and Social Science Edition)

摘　　要：Ising模型对解决局域磁矩间的问题非常有效,然而它只考虑了相邻两电子间的相互作用.通过对所有电子自旋的相互作用的分析,将非相邻的相互作用看成平均场对自旋的作用,计算出一维超Ising模型的配分函数,并推导出一维超Ising模型铁磁相、顺磁相的居里温度及顺磁相磁化的居里—外斯公式,最后从物理上解释了一维Ising模型和一维超Ising模型铁磁相存在与否的根本原因.A revised Ising model in which all the interactions among the electrons are taken into account on the basis of the mean-field theory is proposed. By determining the partition function, that there exists the phase transition in our model is found. The magnetic transition temperature (Curie temperature) and Curie-Wiess equation of our model are also obtained.

关 键 词：一维超Ising模型 配分函数 居里温度 居里一外斯公式 

分 类 号：O411[理学—理论物理]