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题名: PROPERTIES OF AN S=1 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH SINGLE-ION-ANISOTROPY
作者: CHEN, H ;  YU, L ;  SU, ZB
刊名: PHYSICAL REVIEW B
出版日期: 1993
卷号: 48, 期号:17, 页码:12692-12697
关键词: MONTE-CARLO CALCULATION ;  SINE-GORDON EQUATION ;  QUANTUM SPIN CHAINS ;  HALDANE-GAP ;  FIELD-THEORY ;  ENERGY-GAP ;  MODEL ;  PHASE ;  NI(C2H8N2)2NO2(CLO4) ;  MAGNETIZATION
学科分类: Physics
通讯作者: CHEN, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING,PEOPLES R CHINA.
部门归属: TONGJI UNIV,POHL INST SOLID STATE PHYS,SHANGHAI 200092,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
英文摘要: A spin-1 antiferromagnetic Heisenberg chain with a single-ion anisotropy D SIGMA(j)(S(j)z)2 is investigated on the basis of the continuum representation of the model Hamiltonian. Analytical results for the ground state, the excitation spectrum, and the correlation functions are derived in a self-consistent-field approach. We find that the ground state is made of boson pairs and the correlation functions in the ground state decay exponentially. Two Haldane gaps due to the single-ion anisotropy are obtained and a transition at the critical value D(c) = 1 is shown in the lower Haldane gap and the correlation functions.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/11987
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:
CHEN, H,YU, L,SU, ZB. PROPERTIES OF AN S=1 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH SINGLE-ION-ANISOTROPY[J]. PHYSICAL REVIEW B,1993,48(17):12692-12697.
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