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Feng, Xiao-Yong; Zhang, Guang-Ming; Xiang, Tao; Feng, XY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Topological characterization of quantum phase transitions in a spin-1/2 model
发表期刊PHYSICAL REVIEW LETTERS
关键词Breaking
摘要We have introduced a novel Majorana representation of S=1/2 spins using the Jordan-Wigner transformation and have shown that a generalized spin model of Kitaev defined on a brick-wall lattice is equivalent to a model of noninteracting Majorana fermions with Z(2) gauge fields without redundant degrees of freedom. The quantum phase transitions of the system at zero temperature are found to be of topological type and can be characterized by nonlocal string order parameters (SOP). In appropriate dual representations, these SOP become local order parameters and the basic concept of Landau theory of continuous phase transition can be applied.
2007
ISSN0031-9007
卷号98期号:8页码:-
学科领域Physics
收录类别SCI
引用统计
被引频次:168[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/311006/5785
专题理论物理所科研产出_SCI论文
通讯作者Feng, XY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Feng, Xiao-Yong,Zhang, Guang-Ming,Xiang, Tao,et al. Topological characterization of quantum phase transitions in a spin-1/2 model[J]. PHYSICAL REVIEW LETTERS,2007,98(8):-.
APA Feng, Xiao-Yong,Zhang, Guang-Ming,Xiang, Tao,&Feng, XY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2007).Topological characterization of quantum phase transitions in a spin-1/2 model.PHYSICAL REVIEW LETTERS,98(8),-.
MLA Feng, Xiao-Yong,et al."Topological characterization of quantum phase transitions in a spin-1/2 model".PHYSICAL REVIEW LETTERS 98.8(2007):-.
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