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题名: Doublon-holon binding, Mott transition, and fractionalized antiferromagnet in the Hubbard model
作者: Zhou, S;  Wang, YP;  Wang, ZQ
刊名: PHYSICAL REVIEW B
出版日期: 2014
卷号: 89, 期号:19, 页码:195119
关键词: NARROW ENERGY-BANDS ;  FUNCTIONAL-INTEGRAL APPROACH ;  CORRELATED FERMI SYSTEMS ;  MEAN-FIELD THEORY ;  ELECTRON CORRELATIONS ;  GUTZWILLER APPROXIMATION ;  ANDERSON MODEL ;  MONTE-CARLO ;  DOPED V2O3 ;  LIQUID
学科分类: Physics
DOI: 10.1103/PhysRevB.89.195119
通讯作者: Zhou, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Zhou, Sen] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: We argue that the binding between doubly occupied (doublon) and empty (holon) sites governs incoherent excitations and plays a key role in the Mott transition in strongly correlated Mott-Hubbard systems. We construct a new saddle-point solution with doublon-holon binding in the Kotliar-Ruckenstein slave-boson functional integral formulation of the Hubbard model. On a half-filled honeycomb lattice and square lattice, the ground state is found to exhibit a continuous transition from a paramagnetic semimetal/metal to an antiferromagnetic-ordered Slater insulator with coherent quasiparticles at U-cl, followed by a Mott transition into an electron-fractionalized AF* phase without coherent excitations at U-c2. Such a phase structure appears to be generic for bipartite lattices without frustration. We show that doublon-holon binding unites the three important ideas of strong correlation: coherent quasiparticles, incoherent Hubbard bands, and deconfined Mott insulator.
资助者: DOE [DE-FG02-99ER45747, DE-SC0002554]; Thousand Youth Talents Plan of China
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000335886100001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15760
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Zhou, S,Wang, YP,Wang, ZQ. Doublon-holon binding, Mott transition, and fractionalized antiferromagnet in the Hubbard model[J]. PHYSICAL REVIEW B,2014,89(19):195119.
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