Phase Transition for a Mixed Spin-1／2 and Spin-sB System with a Transverse CrystalField  

作　　者：JIANGWei XIAOGui-Bin WEIGuo-Zhu DUAn ZHANGQi 

机构地区：[1]CollegeofSciences,ShenyangUniversityofTechnology,Shenyang110023,China [2]ComputerDepartmenttShenyangAdministrationInstitute~Shenyang110032~China [3]CollegeofSciences,NortheasternUniversity,Shenyang110006,China

出　　处：《Communications in Theoretical Physics》2004年第1期131-134,共4页理论物理通讯（英文版）

基　　金：The project supported by Science Foundation of the Ministry of Education of China under Grant No.99026

摘　　要：The critical behaviors of a mixed spin-1/2 and spin-sB Ising system with a transverse crystal field are studiedby use of the effective-field theory with correlations. The effect of the transverse crystal field on transition temperaturesis investigated numerically for the honeycomb (z = 3) and square (z = 4) lattices. The results show that there is notricritical point for the system.

关 键 词：Ising model transverse crystal field phase diagram 

分 类 号：O763[理学—晶体学]