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题名: Distinct-symmetry spin-liquid states and phase diagram of the Kitaev-Hubbard model
作者: Liang, L ;  Wang, ZQ ;  Yu, Y
刊名: PHYSICAL REVIEW B
出版日期: 2014
卷号: 90, 期号:7, 页码:75119
关键词: GROUND-STATE ;  ANTIFERROMAGNET ;  SUPERCONDUCTIVITY ;  PHYSICS ;  LATTICE ;  ANYONS
学科分类: Physics
DOI: 10.1103/PhysRevB.90.075119
通讯作者: Liang, L (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
部门归属: [Liang, Long ;  Yu, Yue] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China ;  [Wang, Ziqiang] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA ;  [Yu, Yue] Fudan Univ, Ctr Field Theory & Particle Phys, Dept Phys, Shanghai 200433, Peoples R China ;  [Yu, Yue] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
英文摘要: We report the finding of a series of distinct-symmetry spin-liquid (SL) states and a rich phase diagram in a half-filled honeycomb lattice Hubbard model with spin-dependent hopping amplitude t'. We first study the magnetic instability of the system and find two antiferromagnetic orders beyond a critical Hubbard U which increases with the ratio t'/t. For t' approaching t, the semimetal transforms to a U(1) SL and then to the Kitaev Z(2) SL as U increases. In a wide middle range of t'/t, the latter is replaced by a U(1) SL to SU(2) SL transition. The physical properties of the stable SL phases are discussed.
资助者: 973 program of MOST of China [2012CB821402]; NNSF of China [11174298, 11121403]; DOE [DE-FG02-99ER45747]; NSF [DMR-0704545]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000341162600005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15683
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Liang, L,Wang, ZQ,Yu, Y. Distinct-symmetry spin-liquid states and phase diagram of the Kitaev-Hubbard model[J]. PHYSICAL REVIEW B,2014,90(7):75119.
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