镶嵌正方晶格上Gauss模型的相图  

The phase diagram of the Gauss model on a decorated square lattice

作　　者：孙春峰[1] 

机构地区：[1]孝感学院物理与电子信息工程学院,孝感432000

出　　处：《物理学报》2012年第8期336-340,共5页Acta Physica Sinica

基　　金：湖北省教育厅科学技术计划研究重点项目(批准号:D200726001)资助的课题~~

摘　　要：利用等效变换和自旋重标相结合的方法,研究了镶嵌正方晶格上的Gauss模型.研究发现,该系统可以变换为正方晶格上具有最近邻和次近邻相互作用的Gauss系统,由此严格求得了镶嵌正方晶格上Gauss模型的临界温度,得到了该系统的精确相图.Using equivalent transformation and spin-rescaling methods, the Gauss model on a decorated square lattice is studied. It is found that the square decorated Gauss lattice could be transformed into a regular square Gauss lattice with nearest-neighbor, and next-nearest- neighbor interactions. By calculating the regular square-lattice Gauss model, the critical temperature of the Gauss model is obtained on a decorated square lattice, and the exact phase diagram of this system can also be obtained.

关 键 词：镶嵌正方晶格 GAUSS模型 等效变换 相图 

分 类 号：O481[理学—固体物理]