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题名: Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2
作者: Jiang, K ;  Zhou, S ;  Wang, ZQ
刊名: PHYSICAL REVIEW B
出版日期: 2014
卷号: 90, 期号:16, 页码:165135
关键词: CORRELATED FERMI SYSTEMS ;  SPIN LIQUIDS ;  SUPERCONDUCTIVITY ;  COO2
学科分类: Physics
DOI: 10.1103/PhysRevB.90.165135
通讯作者: Jiang, K (reprint author), Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
部门归属: [Jiang, Kun ;  Wang, Ziqiang] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA ;  [Zhou, Sen] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: We show that geometric frustration and strong correlation in the triangular-lattice Hubbard model lead a rich phase structure of root 3 x root 3 spin-charge textured electronic states over a wide region of electron doping 0 <= x <= 0.40. In addition to the 120 degrees Neel ordered insulator at half filling, we found a spin charge ordered insulator at x = 1/3 with collinear antiferromagnetic (AF) order on the underlying unfrustrated honeycomb lattice. Separating the two insulating phases is a Lifshitz transition between a noncollinear AF ordered metal and one with coexisting charge order. We obtain the phase diagram and the evolution of the Fermi surface (FS). Remarkably, the correlated ground states near x = 1/3 emerge as doping the "1/3 AF insulator" by excess carriers, leading to electron and hole FS pockets with important implications for the cobaltate superconducting state.
资助者: 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:000345631700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15606
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Jiang, K,Zhou, S,Wang, ZQ. Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2[J]. PHYSICAL REVIEW B,2014,90(16):165135.
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