From the spin-fermion model to anisotropic superconductivity
Superconductivity
2020-11-04 v1 Strongly Correlated Electrons
Abstract
We use the spin-fermion model to describe the CuO 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.
Cite
@article{arxiv.2010.13543,
title = {From the spin-fermion model to anisotropic superconductivity},
author = {Lizardo H. C. M. Nunes and Eduardo C. Marino},
journal= {arXiv preprint arXiv:2010.13543},
year = {2020}
}