Composite-Fermion Theory for Pseudogap, Fermi Arc, Hole Pocket, and Non-Fermi-Liquid of Underdoped Cuprate Superconductors

Abstract

We propose that an extension of the exciton concept to doped Mott insulators offers a fruitful insight into challenging issues of the copper oxide superconductors. In our extension, new fermionic excitations called cofermions emerge in conjunction to generalized excitons. The cofermions hybridize with conventional quasiparticles. Then a hybridization gap opens, and is identified as the pseudogap observed in the underdoped cuprates. The resultant Fermi-surface reconstruction naturally explains a number of unusual properties of the underdoped cuprates, such as the Fermi arc and/or pocket formation.

arXiv comment9 pages, 8 figures

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Cited by in corpus (37)

• DMFT reveals the non-Hermitian topology in heavy-fermion systems
• Exploring the Dark Side of Cuprate Superconductors: s-wave Symmetry of the Pseudogap
• Mott Transition in the Two-Dimensional Hubbard Model
• Evidence for hidden fermion that triggers high-temperature superconductivity in cuprates
• Non-Hermitian Pseudo-Gaps
• Mottness in a doped organic superconductor
• Un-Fermi Liquids: Unparticles in Strongly Correlated Electron Matter
• Cofermion Theory for Pseudogap Phenomena and Superconducting Mechanism of Underdoped Cuprate Superconductors
• Luttinger's theorem in presence of Luttinger surfaces
• Hidden-Fermion Representation of Self-energy in Pseudogap and Superconducting States of Two-Dimensional Hubbard Model
• Excitons and Dark Fermions as Origins of Mott Gap, Pseudogap and Superconductivity in Cuprate Superconductors --- General Idea and Basic Concept Based on Gap Physics
• Direct Connection between Mott Insulator and d-Wave High-Temperature Superconductor Revealed by Continuous Evolution of Self-Energy Poles
• Spectral properties near the Mott transition in the two-dimensional t-J model
• Theory of pseudogap and superconductivity in doped Mott insulators
• Charge dynamics of the antiferromagnetically ordered Mott insulator
• States induced in the single-particle spectrum by doping a Mott insulator
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• Linear-in-$T$ resistivity from semiholographic non-Fermi liquid models
• Fermi surface expansion above critical temperature in a Hund ferromagnet
• Electronic structure of the ingredient planes of cuprate superconductor Bi2Sr2CuO6+δ: a comparison study with Bi2Sr2CaCu2O8+δ
• Towards the Standard Model of Fermi Arcs from a Wilsonian Reduction of the Hubbard Model
• Relationship between single-particle excitation and spin excitation at the Mott Transition
• Brillouin-zone integration scheme for many-body density of states: Tetrahedron method combined with cluster perturbation theory
• Pseudogap in electron-doped cuprates: Strong correlation leading to band splitting
• Topological structures in unconventional scenario for 2D cuprates
• Signatures of a momentum independent pseudogap in the electronic density of states and Raman spectroscopy of the underdoped cuprates
• Emergence and spectral-weight transfer of electronic states in the Hubbard ladder
• Singularity in self-energy and composite fermion excitations of interacting electrons
• Mott transition and electronic excitation of the Gutzwiller wavefunction
• Temperature-driven change in band structure reflecting spin-charge separation of Mott and Kondo insulators
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• Effects of a k-dependent Hybridization on the Fermi Surface of an Extended $d-p$ Hubbard Model
• Non-equilibrium Transport in the Strange Metal and Pseudogap phases of the Cuprates
• Emergence and evolution of electronic modes with temperature in spin-gapped Mott and Kondo insulators
• Electronic modes induced by spin and charge perturbations in Mott and Kondo insulators