Self-consistent Born approximation for the hole motion in the three-band model: a comparison with photoemission experiments
Oleg A. Starykh, Oziel F. de Alcantara Bonfim, George F. Reiter
Abstract
The dispersion relation of the single hole in the CuO2 plane is calculated in the self-consistent Born approximation for the three-band Hamiltonian. We find that direct oxygen-oxygen hopping removes the strong anisotropy of the hole spectrum around the band minima. Our results compare well with recent photoemission measurements of the single-hole dispersion relation in Sr2 CuO2 Cl2.
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