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题名: Ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder
作者: Wang, XQ ;  Zhu, NS ;  Chen, CF
刊名: PHYSICAL REVIEW B
出版日期: 2002
卷号: 66, 期号:17, 页码:-
关键词: QUANTUM RENORMALIZATION-GROUPS ;  LOW-ENERGY PROPERTIES ;  2-LEG LADDERS ;  SUPERCONDUCTIVITY ;  CHAINS ;  BEHAVIOR ;  MODELS ;  GAP
学科分类: Physics
通讯作者: Wang, XQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA
英文摘要: Using the density matrix renormalization group method we have studied the ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder, and identified two phases corresponding to the spin-3/2 chain and the standard spin ladder. Varying the diagonal coupling J(x) leads to a quantum phase transition from one ground state to the other, but does not alter the gapless nature of the excitation spectra. On the phase boundary, the degenerate ground states form a chiral spin liquid with a central charge c=2. The critical value of J(x) is insensitive to the number of legs in the ladder, suggesting that a quantum phase transition may occur at J(x)=0.6 for the isotropic spin-1/2 antiferromagnetic Heisenberg model on the square lattice.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000179611700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13406
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:
Wang, XQ,Zhu, NS,Chen, CF. Ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder[J]. PHYSICAL REVIEW B,2002,66(17):-.
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