Abstract
We study the antiferromagnetic (AF) ground state of CuO2 layers within a slave-boson approach to a multiband Hubbard model, whereby slave bosons are assigned to Cu sites to deal with the Hubbard repulsion Ud in the limit Ud = ∞. The stability of the antiferromagnetism is tested by varying the separation Δ between p and d hole energy levels and by allowing direct 0-0 hopping.
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