Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2

doi:10.1103/PhysRevB.90.165135

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	Jiang, K; Zhou, S; Wang, ZQ; Jiang, K (reprint author), Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
	Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2
发表期刊	PHYSICAL REVIEW B
语种	英语
关键词	Correlated Fermi Systems Spin Liquids Superconductivity Coo2
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.
	2014
ISSN	1098-0121
卷号	90 期号:16 页码:165135
学科领域	Physics
DOI	10.1103/PhysRevB.90.165135
收录类别	SCI
项目资助者	DOE [DE-FG02-99ER45747]; NSF [DMR-0704545] ; DOE [DE-FG02-99ER45747]; NSF [DMR-0704545] ; DOE [DE-FG02-99ER45747]; NSF [DMR-0704545] ; DOE [DE-FG02-99ER45747]; NSF [DMR-0704545]
引用统计
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/15606
专题	理论物理所科研产出_SCI论文
通讯作者	Jiang, K (reprint author), Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
推荐引用方式 GB/T 7714	Jiang, K,Zhou, S,Wang, ZQ,et al. Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2[J]. PHYSICAL REVIEW B,2014,90(16):165135.
APA	Jiang, K,Zhou, S,Wang, ZQ,&Jiang, K .(2014).Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2.PHYSICAL REVIEW B,90(16),165135.
MLA	Jiang, K,et al."Textured electronic states of the triangular-lattice Hubbard model and NaxCoO2".PHYSICAL REVIEW B 90.16(2014):165135.