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题名: Valence-bond spin-liquid state in two-dimensional frustrated spin-1/2 Heisenberg antiferromagnets
作者: Zhang, GM ;  Hu, H ;  Yu, L
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2003
卷号: 91, 期号:6, 页码:-
关键词: MEAN-FIELD THEORY ;  QUANTUM ANTIFERROMAGNETS ;  DIMER ORDER ;  MODEL ;  PHASE ;  SUPERCONDUCTIVITY ;  LATTICE
学科分类: Physics
通讯作者: Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.
部门归属: Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China; Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Fermionic valence-bond approach in terms of SU(4) representation is proposed to describe the J(1)-J(2) frustrated Heisenberg antiferromagnetic (AF) model on a bipartite square lattice. A uniform mean field solution without breaking the translational and rotational symmetries describes a valence-bond spin-liquid state, interpolating the two different AF ordered states in the large J(1) and large J(2) limits, respectively. This novel spin-liquid state is gapless with the vanishing density of states at the Fermi nodal points. Moreover, a sharp resonance peak in the dynamic structure factor is predicted for momenta q=(0,0) and (pi,pi) in the strongly frustrated limit J(2)/J(1)similar to1/2, which can be checked by neutron scattering experiments.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000184678200048
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13247
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:
Zhang, GM,Hu, H,Yu, L. Valence-bond spin-liquid state in two-dimensional frustrated spin-1/2 Heisenberg antiferromagnets[J]. PHYSICAL REVIEW LETTERS,2003,91(6):-.
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