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题名: Chiral Spin Density Wave Order on the Frustrated Honeycomb and Bilayer Triangle Lattice Hubbard Model at Half-Filling
作者: Jiang, K;  Zhang, Y;  Zhou, S;  Wang, ZQ
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2015
卷号: 114, 期号:21, 页码:216402
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevLett.114.216402
通讯作者: Jiang, K (reprint author), Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
文章类型: Article
英文摘要: We study the Hubbard model on the frustrated honeycomb lattice with nearest-neighbor hopping t(1) and second nearest-neighbor hopping t(2), which is isomorphic to the bilayer triangle lattice, using the SU(2)-invariant slave boson theory. We show that the Coulomb interaction U induces antiferromagnetic (AF) chiral spin density wave (chi SDW) order in a wide range of kappa = t(2)/t(1) where both the two-sublattice AF order at small kappa and the decoupled three-sublattice 120 degrees order at large. are strongly frustrated, leading to three distinct phases with different anomalous Hall responses. We find a continuous transition from a chi SDW semimetal with the anomalous Hall effect to a topological chiral Chern insulator exhibiting the quantum anomalous Hall effect, followed by a discontinuous transition to a chi SDW insulator with a zero total Chern number but an anomalous ac Hall effect. The chi SDW is likely a generic phase of strongly correlated and highly frustrated hexagonal lattice electrons.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: CORRELATED FERMI SYSTEMS ;  BERRY PHASE ;  DOPED GRAPHENE ;  TRIPLE-Q ;  NIS2 ;  ALLOYS ;  SUPERCONDUCTIVITY ;  FERROMAGNET ;  NEUTRON ;  FIELD
收录类别: SCI
项目资助者: U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-FG02-99ER45747]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20991
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Jiang, K,Zhang, Y,Zhou, S,et al. Chiral Spin Density Wave Order on the Frustrated Honeycomb and Bilayer Triangle Lattice Hubbard Model at Half-Filling[J]. PHYSICAL REVIEW LETTERS,2015,114(21):216402.
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