Angle resolved Cu and O photoemission intensities in CuO_2 planes

Abstract

Using a mapping from the three-band extended Hubbard model for cuprate superconductors into a generalized t-J model, and exact diagonalization of the latter in a 4x4 cluster, we determine the quasiparticle weight for destruction of a Cu or an O electrons with definite wave vector k. We also derive an approximate but accurate analytical expression which relates the O intensity with the quasiparticle weight in the generalized t-J model, and use it to obtain the O intensity from results of the self-consistent Born approximation. The k-dependence of Cu and O intensities is markedly different. In particular the O intensity vanishes for k=(0,0). Our results are relevant for the interpretation of angle-resolved photoemission experiments.

8 pages, 3 figures, submitted to Phys. Rev. B

References in corpus (5)

• Comparison of 32-site exact diagonalization results and ARPES spectral functions for the AFM insulator $S{r}_{2}Cu{O}_{2}C{l}_2$
• Doping dependent quasiparticle band structure in cuprate superconductors
• Optical properties of an effective one-band Hubbard model for the cuprates
• Superconductivity and incommensurate spin fluctuations in a generalized t-J model for the cuprates
• Spectral function and quasiparticle weight in the generalized t-J model

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• Effective one-band models for the 1D cuprate Ba${}_{2-x}$Sr${}_x$CuO${}_{3+\delta }$
• Photoemission Spectroscopy from Inhomogeneous Models of Cuprates
• Magnon-assisted dynamics of a hole doped in a cuprate superconductor
• Exact ground states for the four-electron problem in a two-dimensional finite Hubbard square system