Dynamical correlations in one-dimensional charge-transfer insulators

Abstract

The single-particle spectral function and the density response of a two band Emery model for CuO chains is calculated for large on-site Cu repulsion U and large on-site energy difference Δ. For U>>U-Δ>>t the eigenfunctions are products of charge and spin parts, which allows analytical calculation of spectral functions in that limit. For other parameters numerical diagonalization is used. The low energy hole carriers are shown to be the one-dimensional analogs of the Zhang-Rice singlets. The validity of the one-band model is discussed. The results are relevant to the interpretation of photoemission and EELS experiments on SrCuO2 and Sr2CuO3 .

9 pages, 5 figures, to appear in Phys Rev B

References in corpus (4)

• Resonant inelastic x-ray scattering in one-dimensional copper oxides
• Finite-frequency optical absorption in 1D conductors and Mott-Hubbard insulators
• The role of Zhang-Rice singlet-like excitations in one-dimensional cuprates
• Critical Properties in Dynamical Charge Correlation Function for the One-Dimensional Mott Insulator

Cited by in corpus (8)

• Spinons in the strongly correlated copper oxide chains in SrCuO2
• Momentum-Resolved Charge Excitations in a Prototype One Dimensional Mott Insulator
• Particle-hole asymmetry in the dynamical spin and charge structure factors of the corner-shared one-dimensional cuprates
• Anisotropic softening of collective charge modes in the vicinity of critical doping in a doped Mott insulator
• Current spinon-holon description of the one-dimensional charge-transfer insulator SrCuO2: Angle-resolved photoemission measurements
• Doping of a One-Dimensional Mott Insulator: Photoemision and Optical Studies of Sr${}_2$CuO${}_{3+\delta }$
• Interplay of frustration, magnetism, charge ordering, and covalency in a model of Na0.5CoO2
• Realistic description of electron-energy loss spectroscopy for One-Dimensional Sr${}_2$CuO${}_3$