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.

9 pages, 8 figures

References in corpus (5)

• A Phenomenological Theory of The Pseudogap State
• Evolution of electronic structure of doped Mott insulators - reconstruction of poles and zeros of Green's function
• Rotationally-invariant slave-boson formalism and momentum dependence of the quasiparticle weight
• Doped high-Tc cuprate superconductors elucidated in the light of zeros and poles of electronic Green's function
• Charge-transfer exciton in La2CuO4 probed with resonant inelastic x-ray scattering

Cited by in corpus (14)

• Mott Transition in the Two-Dimensional Hubbard Model
• Luttinger's theorem in presence of Luttinger surfaces
• Characteristics of the Mott transition and electronic states of high-temperature cuprate superconductors from the perspective of the Hubbard model
• Fermi and Luttinger arcs: two concepts, realized on one surface
• Fermi surface expansion above critical temperature in a Hund ferromagnet
• Relationship between single-particle excitation and spin excitation at the Mott Transition
• 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
• Emergence of electronic modes by doping Kondo insulators in the Kondo lattice and periodic Anderson models
• Temperature-driven change in band structure reflecting spin-charge separation of Mott and Kondo insulators
• Effects of a k-dependent Hybridization on the Fermi Surface of an Extended $d-p$ Hubbard Model
• 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