Abstract

The spectrum of hole quasiparticles and the role of magnetic correlations are investigated in the self-consistent Irreducible Green Functions formalism motivated from Strongly Correlated Electron systems in the framework of spin-fermion model. It was clearly pointed out on the self-energy level, beyond Hartree-Fock approximation, how the one-and two-magnon processes define the true nature of carriers in HTSC.

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