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String order in half-integer-spin antiferromagnetic Heisenberg chains
Lou, JZ; Qin, SJ; Chen, CF; Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA.
2003
发表期刊PHYSICAL REVIEW LETTERS
ISSN0031-9007
卷号91期号:8页码:-
摘要We derive the extended string order parameter O(S) for antiferromagnetic Heisenberg chains with half-integer spin S in the valence-bond-solid picture. We obtain the analytic power-law scaling of O(S) versus the chain length L and show that O(S) scales at an extremely slow pace that decreases rapidly with growing spin magnitude. Furthermore, accurate numerical calculations show that the power-law scaling sets in only when L exceeds a characteristic length scale l(S) which increases very fast with growing S. Consequently, a pseudo-long-range string order exists in half-integer-spin Heisenberg chains. The implications of this result and its relationship to other topological features such as the end-chain states are discussed.
部门归属Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Quantum Renormalization-groups Bond Ground-states Long-range Order Edge States Sigma-model
学科领域Physics
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收录类别SCI
WOS记录号WOS:000184898800051
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被引频次:9[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/311006/13234
专题1978-2010年知识产出
通讯作者Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA.
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GB/T 7714
Lou, JZ,Qin, SJ,Chen, CF,et al. String order in half-integer-spin antiferromagnetic Heisenberg chains[J]. PHYSICAL REVIEW LETTERS,2003,91(8):-.
APA Lou, JZ,Qin, SJ,Chen, CF,&Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA..(2003).String order in half-integer-spin antiferromagnetic Heisenberg chains.PHYSICAL REVIEW LETTERS,91(8),-.
MLA Lou, JZ,et al."String order in half-integer-spin antiferromagnetic Heisenberg chains".PHYSICAL REVIEW LETTERS 91.8(2003):-.
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