Universal suppression of superfluid weight by non-magnetic disorder in $s$-wave superconductors independent of quantum geometry and band dispersion

@article{Lau2022UniversalSO,
  title={Universal suppression of superfluid weight by non-magnetic disorder in \$s\$-wave superconductors independent of quantum geometry and band dispersion},
  author={Alexander Lau and Sebastiano Peotta and Dmitry I. Pikulin and Enrico Rossi and Timo Hyart},
  journal={SciPost Physics},
  year={2022}
}
Motivated by the experimental progress in controlling the properties of the energy bands in superconductors, significant theoretical efforts have been devoted to study the effect of the quantum geometry and the flatness of the dispersion on the superfluid weight. In conventional superconductors, where the energy bands are wide and the Fermi energy is large, the contribution due to the quantum geometry is negligible, but in the opposite limit of flat-band superconductors the superfluid weight… 
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