Mean field solutions to singlet hopping and superconducting pairing within a two-band Hubbard model

Details Mean field solutions to singlet hopping and superconducting pairing within a two-band Hubbard model Mean field solutions to singlet hopping and superconducting pairing within a two-band Hubbard model

2006-09-25

arxiv.org/abs/cond-mat/0609644v1

Physics

Condensed Matter

Superconductivity

11 pages, presented at MMCP 2006 Conference, Slovakia, Aug. 28 - Sept. 03, 2006. Submitted to PEPAN Letters

Scientific paper

The mean field Green function solution of the two-band singlet-hole Hubbard model for high-$T\sb{c}$ superconductivity in cuprates (Plakida, N.M. et al., Phys. Rev. B51, 16599 (1995), JETP 97, 331 (2003)) involves expressions of higher order correlation functions describing respectively the singlet hopping and the superconducting pairing. Rigorous derivation of their values is reported based on the finding that specific invariant classes of polynomial Green functions in terms of the Wannier overlap coefficients $\nu\sb{ij}$ exist.

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