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Heisenberg spin-1 chain in a staggered magnetic field: A density-matrix-renormalization-group study
Lou, JZ; Dai, X; Qin, SJ; Su, ZB; Yu, L; Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
1999
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号60期号:1页码:52-55
摘要Using the density-matrix-renormalization-group technique, we calculate numerically the low-energy excitation spectrum and magnetization curve of the spin-1 antiferromagnetic chain in a staggered magnetic field, which is expected to describe the physics of the R2BaNiO5 (R not equal Y) family below the Neel temperature of the magnetic rare-earth (Rf sublattice. These results are valid in the entire range of the staggered field, and agree with those given by the nonlinear sigma model study for small fields, but differ from the latter for large fields. They are consistent with the available experimental data. The correlation functions for this model are also calculated. The transverse correlations display the anticipated exponential decay with-shorter correlation length, while the: longitudinal correlations show explicitly the induced staggered magnetization. [S0163-1829(99)04021-7].
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Int Ctr Theoret Phys, I-34100 Trieste, Italy
关键词Haldane-gap Excitations Transition-metal Oxide Antiferromagnet Nd2banio5 Y2banio5 (Ndxy1-x)(2)Banio5 Scattering Dynamics Order
学科领域Physics
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收录类别SCI
WOS记录号WOS:000081551100014
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被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13124
专题理论物理所1978-2010年知识产出
通讯作者Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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Lou, JZ,Dai, X,Qin, SJ,et al. Heisenberg spin-1 chain in a staggered magnetic field: A density-matrix-renormalization-group study[J]. PHYSICAL REVIEW B,1999,60(1):52-55.
APA Lou, JZ,Dai, X,Qin, SJ,Su, ZB,Yu, L,&Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(1999).Heisenberg spin-1 chain in a staggered magnetic field: A density-matrix-renormalization-group study.PHYSICAL REVIEW B,60(1),52-55.
MLA Lou, JZ,et al."Heisenberg spin-1 chain in a staggered magnetic field: A density-matrix-renormalization-group study".PHYSICAL REVIEW B 60.1(1999):52-55.
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