Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies

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	Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies; Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies
	H. N. Wu; G. Z. Wei; G. Y. Yi
	2008 ; 2008
发表期刊	Physics Letters A ; Physics Letters A
ISSN	0375-9601 ; 0375-9601
卷号	372 期号:43 页码:6531-6535
摘要	The mixed spin-1/2 and 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 are obtained. The phase diagram of the ground state is also given. The results show that when D-z >= 0 for any finite value of D-x there is no quantum critical point and the ground state is always in a spin ordered phase disregard of the boundary condition in the present system. (C) 2008 Elsevier B.V. All rights reserved.; The mixed spin-1/2 and 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 are obtained. The phase diagram of the ground state is also given. The results show that when D-z >= 0 for any finite value of D-x there is no quantum critical point and the ground state is always in a spin ordered phase disregard of the boundary condition in the present system. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[wu, haina; wei, guozhu; yi, guangyu] northeastern univ, coll sci, shenyang 110004, peoples r china. [wei, guozhu] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;wei, gz (reprint author), northeastern univ, coll sci, shenyang 110004, peoples r china;guozhuwei02@sina.com ; [wu, haina; wei, guozhu; yi, guangyu] northeastern univ, coll sci, shenyang 110004, peoples r china. [wei, guozhu] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;wei, gz (reprint author), northeastern univ, coll sci, shenyang 110004, peoples r china;guozhuwei02@sina.com
关键词	Mixed Spin Ising Chain Mixed Spin Ising Chain Single-ion Anisotropy Single-ion Anisotropy Exact Result Exact Result Low-temperature Properties Low-temperature Properties Ferrimagnetic Chain Ferrimagnetic Chain Quantum Quantum Field Field S=1/2 S=1/2
URL	查看原文 ; 查看原文
WOS记录号	WOS:000260929700013 ; WOS:000260929700013
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33203
专题	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,G. Y. Yi. Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies, Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies[J]. Physics Letters A, Physics Letters A,2008, 2008,372, 372(43):6531-6535, 6531-6535.
APA	H. N. Wu,G. Z. Wei,&G. Y. Yi.(2008).Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies.Physics Letters A,372(43),6531-6535.
MLA	H. N. Wu,et al."Exact results of a mixed spin-1/2 and spin-1 Ising chain with both longitude and transverse single-ion anisotropies".Physics Letters A 372.43(2008):6531-6535.