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Monte Carlo study of the magnetic properties of spin liquid compound NiGa2S4

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：O412.1[理学—理论物理;理学—物理] O572.2[理学—粒子物理与原子核物理;理学—物理]
作者机构：[1]College of Mathematics and Physics, B ohai University, Jinzhou 121013, China, [2]Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China, [3]School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China, [4]State Key Laboratory of Metastable Materials Science & Technology and College of Science, Yanshan University, Qinhuangdao 066004, China, [5]College of Engineering, B ohai University, Jinzhou 121013, China
相关基金：Project supported by the National Natural Science Foundation of China （Grant Nos. 11247428, 11247210, 10974228, and 61274101） and the Natural Science Foundation of Liaoning Province, China （Grant No. 20121078）, and the Education Office of Liaoning Province, China （Grant No. L201197）.

关键词：自旋相互作用, 蒙特卡洛研究, 磁学性质, 体复合, 描述系统, 掺杂效应, 磁性杂质, 磁特性, spin liquid state, specific heat, magnetization, correlation length

中文摘要：

The magnetic properties of two-dimensional antiferromagnet NiGa2S4have attracted much attention and yet some problems are far from being solved. We investigate the magnetic properties of NiGa2S4by Monte Carlo simulations. A new spin-interacting model is proposed to describe the system, and the specific heat together with the doping effect of nonmagnetic impurity is studied by simulations. The double peaks of the specific heat as well as other behaviors are well reproduced. We also compare our results with those of other models, and the underlying physics is discussed.

英文摘要：

The magnetic properties of two-dimensional antiferromagnet NiGa2S4 have attracted much attention and yet some problems are far from being solved. We investigate the magnetic properties of NiGa2S4 by Monte Carlo simulations. A new spin-interacting model is proposed to describe the system, and the specific heat together with the doping effect of nonmagnetic impurity is studied by simulations. The double peaks of the specific heat as well as other behaviors are well reproduced. We also compare our results with those of other models, and the underlying physics is discussed.

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