Critical Properties of Mixed Ising Spin System with Different Trimodal Transverse Fields in the Presence of Single-Ion Anisotropy  

作　　者：CHEN Qiang YAN Shi-Lei 

机构地区：[1]Department of Physics, Suzhou University, Suzhou 215006, China [2]Jiangsu Key Laboratory of Thin Films, Suzhou University, Suzhou 215006, China [3]Nantong Shipping College, Nantong 226006, China [4]CCAST （World Loboratory）, P.O. Box 8730, Beijing 100080, China

出　　处：《Communications in Theoretical Physics》2006年第6期1131-1136,共6页理论物理通讯（英文版）

基　　金：The project supported partly by the Key Projects of Natural Science Foundation of Jiangsu Province of China under Grant No. 03KJA140117 and the 0pen Foundation of Jiangsu Key Laboratory of Thin Films under Grant No. K2022

摘　　要：Within the framework of an effective field approximation, the effects of single-ion anisotropy and different trimodal transverse fields of two sublattices on the critical properties of the mixed spin-1/2 and spin-1 Ising system are investigated on the simple cubic lattice. A smaller single-lon anisotropy can magnify magnetic ordering phases and a larger one can depress magnetic ordering phase for T-Ω1/2 space at low temperatures, while a smaller single-ion anisotropy can hardly change the value of critical transverse field for T-Ω1 space. On the other hand, influences of two different trimodal transverse fields concentrations on tricritical points and magnetic ordering phases take on some interesting results in T-D space. The main reason comes from the common action of single-ion anisotropy, different transverse fields and two trimodal distributions.

关 键 词：critical property mixed spin system trimodal transverse field single-ion anisotropy 

分 类 号：O413[理学—理论物理]