Pseudogap Formation in an Electronic System with d-wave Attraction at Low-density

Abstract

On the basis of an electronic model with separable attractive interaction, the precursors at high temperature and strong coupling of the d-wave superconducting state are investigated in the one-particle spectral function $A(\mathbf{k},\omega )$ and the total density of states $\rho (\omega )$, with the use of the self-consistent $t$-matrix approximation. In the low-density region, it is found that a gap-like structure at the Fermi level appears in $A(\mathbf{k},\omega )$ and $\rho (\omega )$ above the superconducting transition temperature. It is shown that the pseudogap energy scale is determined by the binding energy of the Cooper-pair.

9 pages, RevTex, 10 eps figures. Submitted to Phys. Rev. B

References in corpus (12)

• The Unusual Superconducting State of Underdoped Cuprates
• Weak Pseudogap Behavior in the Underdoped Cuprate Superconductors
• Phase Fluctuations and Spectral Properties of Underdoped Cuprates
• Pseudogap effects induced by resonant pair scattering
• Non-interacting Cooper pairs inside a pseudogap
• On the Relationship Between the Pseudo- and Superconducting Gaps: Effects of Residual Pairing Correlations Below Tc
• Theory of the Optical Conductivity in the Cuprate Superconductors
• Hole Doping Evolution of the Quasiparticle Band in Models of Strongly Correlated Electrons for the High-T_c Cuprates
• Density-Induced Breaking of Pairs in the Attractive Hubbard Model
• Attractive Hubbard model and single-particle pseudogap due to classical pairing fluctuations in two dimensions
• The pseudogap in underdoped high Tc superconductors in the framework of the Boson Fermion model
• Pseudogaps: A third peak in the fermion spectral function

Cited by in corpus (23)

• Phase Fluctuations and Pseudogap Phenomena
• Theory of Superconductivity in Strongly Correlated Electron Systems
• Pseudogap and spectral function from superconducting fluctuations to the bosonic limit
• Ferromagnetic, A-type, and Charge-Ordered CE-type States in Doped Manganites using Jahn-Teller Phonons
• Charge-orbital ordering and phase-separation in the two-orbital model for manganites: Roles of Jahn-Teller phononic and Coulombic interactions
• Ground state and excited state properties of LaMnO${}_3$ from full-potential calculation
• Theoretical Study of Half-Doped Models for Manganites: Fragility of the CE Phase with Disorder, Two Types of Colossal Magnetoresistances, and Charge-Ordered States for Electron-Doped Materials
• Stripes Induced by Orbital Ordering in Layered Manganites
• Orbital excitations in LaMnO${}_3$
• Photoemission spectra of LaMnO3 controlled by orbital excitations
• Competition between ferromagnetic and charge-orbital ordered phases in Pr${}_{1-x}$Ca${}_x$MnO${}_3$ for $x$=1/4, 3/8, and 1/2
• Insulator to Metal Transition Induced by Disorder in a Model for Manganites
• Orbital Ordering in Paramagnetic LaMnO3 and KCuF3
• Kinetic energy driven superconductivity and pseugogap phase in weakly doped antiferromagnets
• Metal-to-insulator crossover and pseudogap in single-layer compound Bi${}_{2+x}$Sr${}_{2-x}$Cu${}_{1+y}$O${}_{6+\delta }$ single crystals in high magnetic fields
• Interplay between Spin and Phonon Fluctuations in the double-exchange model for the manganites
• Single hole motion in LaMnO${}_3$
• Superconductivity in the quasi-two-dimensional Hubbard model
• Orbital order and ferromagnetism in LaMnO3 doped with Ga
• Spectral properties and pseudogaps in a model with d-wave pairing symmetry
• Effects of inhomogeneities and thermal fluctuations on the spectral function of a model d-wave superconductor
• Canted Magnetic Ground State of Quarter-Doped Manganites $R_{0.75}$Ca${}_{0.25}$MnO${}_3$ ($R$ = Y, Tb, Dy, Ho, and Er)
• Time-dependent local Green's operator and its applications to manganites