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Jiang, K1,2,3; Zhou, S1; Dai, X2,3; Wang, ZQ
Antiferromagnetic Chern Insulators in Noncentrosymmetric Systems
发表期刊PHYSICAL REVIEW LETTERS
语种英语
关键词CORRELATED FERMI SYSTEMS SPIN REALIZATION MODEL APPROXIMATIONS
摘要We investigate a new class of topological antiferromagnetic (AF) Chern insulators driven by electronic interactions in two-dimensional systems without inversion symmetry. Despite the absence of a net magnetization, AF Chern insulators (AFCI) possess a nonzero Chern number C and exhibit the quantum anomalous Hall effect (QAHE). Their existence is guaranteed by the bifurcation of the boundary line of Weyl points between a quantum spin Hall insulator and a topologically trivial phase with the emergence of AF long-range order. As a concrete example, we study the phase structure of the honeycomb lattice Kane-Mete model as a function of the inversion-breaking ionic potential and the Hubbard interaction. We find an easy z axis C = 1 AFCI phase and a spin-flop transition to a topologically trivial xy plane collinear antiferromagnet. We propose experimental realizations of the AFCI and QAHE in correlated electron materials and cold atom systems.
2018
ISSN0031-9007
卷号120期号:15页码:157205
学科领域Physics
学科门类Physics, Multidisciplinary
DOI10.1103/PhysRevLett.120.157205
收录类别SCIE
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被引频次:3[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/311006/22923
专题理论物理所科研产出_SCI论文
作者单位1.Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
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Jiang, K,Zhou, S,Dai, X,et al. Antiferromagnetic Chern Insulators in Noncentrosymmetric Systems[J]. PHYSICAL REVIEW LETTERS,2018,120(15):157205.
APA Jiang, K,Zhou, S,Dai, X,&Wang, ZQ.(2018).Antiferromagnetic Chern Insulators in Noncentrosymmetric Systems.PHYSICAL REVIEW LETTERS,120(15),157205.
MLA Jiang, K,et al."Antiferromagnetic Chern Insulators in Noncentrosymmetric Systems".PHYSICAL REVIEW LETTERS 120.15(2018):157205.
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