Antiferromagnetism and Superconductivity in Three-Band Hubbard Model
J. Dutka and A.M. Oleś
Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
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We determined the phase diagram of the three-band model for CuO2 planes of high temperature superconductors with an attractive interoxygen interaction Upp. The found magnetic moments of 0.47µB in the undoped system, the disappearance of antiferromagnetic order at the doping of δ ≈ 0.06 hole per CuO2 unit, as well as the enhanced tendency to superconductivity with the decreasing value of charge-transfer gap, are in good agreement with the experimental findings.
DOI: 10.12693/APhysPolA.85.323
PACS numbers: 75.50.Ee, 74.20.-z