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题名: Heisenberg spin-1 chain in a staggered magnetic field: A density-matrix-renormalization-group study
作者: Lou, JZ ;  Dai, X ;  Qin, SJ ;  Su, ZB ;  Yu, L
刊名: PHYSICAL REVIEW B
出版日期: 1999
卷号: 60, 期号:1, 页码:52-55
关键词: HALDANE-GAP EXCITATIONS ;  TRANSITION-METAL OXIDE ;  ANTIFERROMAGNET ND2BANIO5 ;  Y2BANIO5 ;  (NDXY1-X)(2)BANIO5 ;  SCATTERING ;  DYNAMICS ;  ORDER
学科分类: Physics
通讯作者: Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Int Ctr Theoret Phys, I-34100 Trieste, Italy
英文摘要: 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].
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000081551100014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13124
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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.
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