From the spin-fermion model to anisotropic superconductivity

Lizardo H. C. M. Nunes; Eduardo C. Marino

doi:10.1016/j.physb.2006.01.228

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arXiv · 2010.13543

From the spin-fermion model to anisotropic superconductivity

Lizardo H. C. M. Nunes·Eduardo C. Marino

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Abstract

We use the spin-fermion model to describe the CuO$_2$ planes of the high-Tc superconductors. Using a large wavelength approach, we show that the ferromagnetic component of the Cu spin fluctuations couple to the oxygen holes producing a pairing interaction that leads to a superconducting gap whose symmetry is determined by the anisotropy of the Kondo interaction. We calculate Tc as a function of the hole concentration in a mean-field approximation and our numerical results are in good agreement with the experiments.

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Lizardo H. C. M. Nunes, Eduardo C. Marino. 2020-10-02. From the spin-fermion model to anisotropic superconductivity. https://doi.org/10.1016/j.physb.2006.01.228

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