CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Dyson-Maleev theory of an X X Z ferrimagnetic spin chain with single-ion anisotropy |
Yu-Ge Chen(陈宇戈)1, Yin-Xiang Li(李殷翔)2, Li-Jun Tian(田立君)1, Bin Chen(陈斌)2 |
1 College of Sciences, Shanghai University, Shanghai 200444, China;
2 Tin Ka-Ping College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China |
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Abstract We use the mean-field approximation of Dyson-Maleev representation to study an XXZ Heisenberg ferrimagnetic spin chain with single-ion anisotropy. By solving the self-consistent equations with different anisotropies, λ and D respectively, the energy spectrums, internal energy, static susceptibility and specific heat are calculated. Especially, the quantum phase transition of the magnetization plateau induced by single-ion anisotropy D is obtained in the model of the ferrimagnetic spin chain by using Dyson-Maleev mean-field theory.
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Received: 28 April 2018
Revised: 18 September 2018
Accepted manuscript online:
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PACS:
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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75.50.Gg
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(Ferrimagnetics)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10774035) and the Qianjiang RenCai Program of Zhejiang Province, China (Grant No. 2007R0010). |
Corresponding Authors:
Yin-Xiang Li, Bin Chen
E-mail: yinxiangl@hotmail.com;chenbin@usst.edu.cn
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Cite this article:
Yu-Ge Chen(陈宇戈), Yin-Xiang Li(李殷翔), Li-Jun Tian(田立君), Bin Chen(陈斌) Dyson-Maleev theory of an X X Z ferrimagnetic spin chain with single-ion anisotropy 2018 Chin. Phys. B 27 127501
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