Schwinger-boson approach to anisotropy ferrimagnetic chain with bond alternation
Li Yin-Xiang (李殷翔)a, Chen Bin (陈斌)b
a Business School, University of Shanghai for Science and Technology, Shanghai 200093, China; b Tin Ka-Ping College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
Abstract We use the Schwinger-boson approach to study the anisotropy ferrimagnetic spin-(1/2,1) chain with bond alternation. Based on the effect of bond alternation δ, we obtain energy gap, free energy, and specific heat, respectively. The specific heat with larger bond alternation (δ>0.7) displays a peak at low temperature. Based on the effect of XXZ anisotropy parameter Δ, we present excited spectrums, free energy, and specific heat, respectively.
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:
Li Yin-Xiang
E-mail: yinxiangl@hotmail.com
Cite this article:
Li Yin-Xiang (李殷翔), Chen Bin (陈斌) Schwinger-boson approach to anisotropy ferrimagnetic chain with bond alternation 2015 Chin. Phys. B 24 027502
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