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PROPERTIES OF AN S=1 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH SINGLE-ION-ANISOTROPY
CHEN, H; YU, L; SU, ZB; CHEN, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING,PEOPLES R CHINA.
1993
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号48期号:17页码:12692-12697
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.
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
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
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11987
专题理论物理所1978-2010年知识产出
通讯作者CHEN, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING,PEOPLES R CHINA.
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CHEN, H,YU, L,SU, ZB,et al. PROPERTIES OF AN S=1 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH SINGLE-ION-ANISOTROPY[J]. PHYSICAL REVIEW B,1993,48(17):12692-12697.
APA CHEN, H,YU, L,SU, ZB,&CHEN, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING,PEOPLES R CHINA..(1993).PROPERTIES OF AN S=1 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH SINGLE-ION-ANISOTROPY.PHYSICAL REVIEW B,48(17),12692-12697.
MLA CHEN, H,et al."PROPERTIES OF AN S=1 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH SINGLE-ION-ANISOTROPY".PHYSICAL REVIEW B 48.17(1993):12692-12697.
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