Superfluid Density in Conventional Superconductors: From Clean to Strongly Disordered

Abstract

The highly convergent form of superfluid density in disordered conventional superconductors available in the literature and independently obtained by us following the approach of an earlier paper [Phys. Rev. B $102$, 024514 (2020)] has been reformulated to separate out the generally used so-called `dirty-limit' term and an additional term. We use this new expression for making an extensive comparison with previously published experimental data and show that the former, generally used, term is {\em not} sufficient for analyzing these results. We point out that consequently, there is a large regime (disordered superconductors with moderate to no disorder) where theoretical predictions need to be confronted with experiment.

8 pages, 3 figures

References in corpus (3)

• Superconducting properties and Hall Effect of epitaxial NbN thin films
• Phase fluctuations in a strongly disordered s-wave superconductor close to the metal-insulator transition
• The unusual thickness dependence of superconductivity in $\alpha$-MoGe thin films

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• Evidence of the disorder-independent electron-phonon scattering time in thin NbN films
• Estimating the Energy Threshold of Phonon-mediated Superconducting Qubit Detectors Operated in an Energy-Relaxation Sensing Scheme
• Universal scaling relations in electron-phonon superconductors
• Two characteristic contributions to the superconducting state of 2$H$-NbSe${}_2$
• Linear non-saturating magnetoresistance and superconductivity in epitaxial thin films of YbSb${}_2$