Repulsive interaction helps superconductivity in fullerides

@article{Yamazaki2013RepulsiveIH,
  title={Repulsive interaction helps superconductivity in fullerides},
  author={Satoshi Yamazaki and Y. Kuramoto},
  journal={Bulletin of the American Physical Society},
  year={2013},
  volume={2013}
}
A repulsive interaction model of superconductivity (SC) is studied for tight-binding models with three-fold degenerate molecular orbitals. Taking a weak-coupling approach, we derive dimensionless coupling constants for various symmetries of SC pairs. In addition to anisotropic SC pairs, the s-wave (\(A_{g}\)) pairing can also be formed. With the purely repulsive interaction, however, the \(A_{g}\) pair is not the most stable in both bcc and fcc lattices. The most stable SC pair for the bcc… 
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