Metallic State of the Three-band Hubbard Model with Super-lattice Structure

Abstract

We investigate the dynamical superlattice correlation in the two-dimensional three-band Hubbard model on the basis of the unrestricted fluctuation exchange approximation. We calculate the one-particle spectral function, the spin correlation function and the charge correlation function at finite temperature. We find that some experimental results can be reproduced consistenly by taking inhomogenous distribution of Cu 3d electrons into account. The correlation functions suggest that several kinds of instabilities with spatial inhomogenieties exist in some regions, where these instabilities significantly affect the one-particle spectral fuctions.

arXiv comment17 pages, 9 figures

References in corpus (17)

• Quantum Magnetic Excitations from Stripes in Copper-Oxide Superconductors
• Nonlocal Dynamical Correlations of Strongly Interacting Electron Systems
• Doping dependence of an n-type cuprate superconductor investigated by ARPES
• Nodal metallic behavior of lightly-doped La${}_{2-x}$Sr${}_x$CuO${}_4$
• Competition between charge/spin-density-wave orders and superconductivity in La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$
• Implications of Charge Ordering for Single-Particle Properties of High-Tc Superconductors
• Glassy nature of stripe ordering in La(1.6-x)Nd(0.4)Sr(x)CuO(4)
• A Non-Crossing Approximation for the Study of Intersite Correlations
• Electronic Structure of Stripes in Two-Dimensional Hubbard Model
• An angle-resolved photoemission spectral function analysis of the electron doped cuprate Nd_1.85Ce_0.15CuO_4
• Fully Gapped Single-Particle Excitations in the Lightly Doped Cuprates
• Stripe structure, spectral feature and soliton gap in high Tc cuprates
• Structural effect on the static spin and charge correlations in La${}_{1.875}$Ba${}_{0.125-x}$Sr${}_x$CuO${}_4$
• Spectral functions in itinerant electron systems with geometrical frustration
• Spin and charge excitations in incommensurate spin density waves
• Charge Density Wave Formation in the Low-Temperature-Tetragonal Phase of Cuprates
• Effective interactions in the stripe state of the two-dimensional Hubbard model