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Angle resolved Cu and O photoemission intensities in CuO_2 planes

J. M. Eroles·C. D. Batista·A. A. Aligia
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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.

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J. M. Eroles, C. D. Batista, A. A. Aligia. 1998-12-18. Angle resolved Cu and O photoemission intensities in CuO_2 planes. https://doi.org/10.1103/physrevb.59.14092

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