具有4-自旋相互作用Ising模型性质的模拟研究  

Research on the Properties of Ising Model with Four-spin Interaction

作　　者：高茜[1] 杜安[1] 杜海峰[1] 

机构地区：[1]东北大学理学院,辽宁沈阳110004

出　　处：《辽宁大学学报（自然科学版）》2006年第3期235-238,共4页Journal of Liaoning University：Natural Sciences Edition

基　　金：辽宁省自然科学基金(2005222005)

摘　　要：利用MonteCarlo模拟研究了具有4-自旋相互作用Ising模型的磁学性质.模型建立在平面蜂窝状晶格上,除了考虑对相互作用以外,还考虑了四自旋相互作用.给出了不同四自旋相互作用下系统的磁化强度、磁内能、磁比热、磁化率以及转变温度等物理量.结果表明,4-自旋之间的相互作用对Ising模型的性质有很大影响,但基本上是定量的.MonteCarlo模拟的结果对有效场理论(EFT)的结果给出了很大的修正.The magnetic properties of Ising model with four - spin interaction on the honeycomb lattice are studied using the Monte Carlo （MC） method. We consider both pair interaction and four - spin interaction of the system. Magnetic properties of the system with different four- spin interaction such as magnetization, internal energy, specific heat, susceptibility and critical temperature are obtained. The results show that the four- spin interaction influences the magnetic properties of system dramatically, however the influence is basically quantitative. The simulation result by MC method makes a big modification to that of EFT.

关 键 词：MONTE CARLO模拟 4-自旋相互作用 ISING模型 磁学性质 

分 类 号：O482.52[理学—固体物理]