Exact results of a dimerized S=1 Ising chain with single-ion anisotropy

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	Exact results of a dimerized S=1 Ising chain with single-ion anisotropy
	H. N. Wu ; G. Z. Wei ; Y. Han ; G. Y. Yi ; W. J. Gong
刊名	Journal of Magnetism and Magnetic Materials
	2009
卷号	321 期号:19 页码:3104-3109
关键词	Dimerization Spin Ising chain Single-ion anisotropy Exact result Quantum phase transition quantum phase-transitions transverse-field critical-behavior antiferromagnetic chain magnetization plateaus ground-state spin-1/2 model compound
ISSN号	0304-8853
中文摘要	The dimerized spin-1 Ising chain with both longitude and transverse single-ion anisotropies D(z) and D(x) is solved exactly by means of a mapping to the spin-1/2 Ising chain with the alternating transverse fields and the Jordan-Wigner transformation. The analytical expressions of the quasi-particles' spectra Lambda(k), the minimal energy gap Delta(0) for exciting a fermion quasi-particle , the minimal energy gap Delta(h) for exciting a hole, and the ground-state energy E(g) are obtained. The phase diagram of the ground state is also given. The results show that the system exhibits a series of quantum phase transitions depending on the dimerization strength of the crystal fields, while the quantum critical points are determined exactly. (C) 2009 Elsevier B.V. All rights reserved.
原文出处	://WOS:000268022700027
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32424]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. N. Wu,G. Z. Wei,Y. Han,et al. Exact results of a dimerized S=1 Ising chain with single-ion anisotropy[J]. Journal of Magnetism and Magnetic Materials,2009,321(19):3104-3109.
APA	H. N. Wu,G. Z. Wei,Y. Han,G. Y. Yi,&W. J. Gong.(2009).Exact results of a dimerized S=1 Ising chain with single-ion anisotropy.Journal of Magnetism and Magnetic Materials,321(19),3104-3109.
MLA	H. N. Wu,et al."Exact results of a dimerized S=1 Ising chain with single-ion anisotropy".Journal of Magnetism and Magnetic Materials 321.19(2009):3104-3109.