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Robust D-wave Pairing Correlations in a Hole-Doped Spin-Fermion Model for Cuprates

M. Moraghebi·S. Yunoki·A. Moreo
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Abstract

Pairing Correlations are studied numerically in the hole-doped spin-fermion model for cuprates. Simulations performed on up to 12x12 clusters provide robust indications of D-wave superconductivity away from half-filling. The pairing correlations are the strongest in the direction perpendicular to the dynamic stripe-like inhomogeneities that appear in the ground state at some densities. An optimal doping, where the correlations reach a maximum value, was observed at about 25% doping, in qualitative agreement with hight T_{c} cuprates' experiments. On the other hand, pairing correlations are suppressed by static stripe inhomogeneities.

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M. Moraghebi, S. Yunoki, A. Moreo. 2001-10-19. Robust D-wave Pairing Correlations in a Hole-Doped Spin-Fermion Model for Cuprates. https://doi.org/10.1103/physrevlett.88.187001

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