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Ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder
Wang, XQ; Zhu, NS; Chen, CF; Wang, XQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
2002
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号66期号:17页码:-
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.
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
关键词Quantum Renormalization-groups Low-energy Properties 2-leg Ladders Superconductivity Chains Behavior Models Gap
学科领域Physics
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收录类别SCI
WOS记录号WOS:000179611700006
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13406
专题理论物理所SCI论文
通讯作者Wang, XQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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Wang, XQ,Zhu, NS,Chen, CF,et al. Ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder[J]. PHYSICAL REVIEW B,2002,66(17):-.
APA Wang, XQ,Zhu, NS,Chen, CF,&Wang, XQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2002).Ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder.PHYSICAL REVIEW B,66(17),-.
MLA Wang, XQ,et al."Ground-state phase diagram of a spin-1/2 frustrated three-leg antiferromagnetic Heisenberg ladder".PHYSICAL REVIEW B 66.17(2002):-.
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