Dyson-Maleev theory of an X X Z ferrimagnetic spin chain with single-ion anisotropy

doi:10.1088/1674-1056/27/12/127501

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.

Keywords: Dyson-Maleev mean-field theory XXZ anisotropy Single-ion anisotropy ferrimagnetic spin chain

Received: 28 April 2018
Revised: 18 September 2018
Accepted manuscript online:

PACS:	75.40.Cx	(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
	75.50.Gg	(Ferrimagnetics)

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

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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[1]	Schwinger-boson approach to anisotropy ferrimagnetic chain with bond alternation Li Yin-Xiang (李殷翔), Chen Bin (陈斌). Chin. Phys. B, 2015, 24(2): 027502.
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