Self-consistent Born approximation for the hole motion in the three-band model: A comparison with photoemission experiments
1995; American Physical Society; Volume: 52; Issue: 17 Linguagem: Inglês
10.1103/physrevb.52.12534
ISSN1095-3795
AutoresOleg A. Starykh, Oziel F. de Alcantara Bonfim, George Reiter,
Tópico(s)Advanced Condensed Matter Physics
ResumoThe dispersion relation of the single hole in the $CuO_2$ 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 $Sr_2 CuO_2 Cl_2$.
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