Superfluid density in gapless superconductor CeCoIn5

V. G. Kogan; R. Prozorov; C. Petrovic

Superfluid density in gapless superconductor CeCoIn5

Superconductivity 2007-12-12 v1 Strongly Correlated Electrons

Authors: V. G. Kogan , R. Prozorov , C. Petrovic

Abstract

Temperature dependence of the London penetration depth $\lambda$ measured in single crystals of CeCoIn $_5$ is interpreted as caused by a strong pair-breaking scattering that makes the superconductivity in this compound gapless. For a gapless d-wave superconductor, we derive $\lambda=\lambda_0/\sqrt{1-(T/T_c)^2}$ caused by combined effect of magnetic and non-magnetic scattering in excellent agreement with the data in the full temperature range and with the gapless s-wave case of Abrikosov and Gor'kov. We also obtain the slope of the upper critical field at $T_c$ that compares well with the measured slope.

Keywords

superconductivity high-temperature superconductivity cuprate superconductors

Cite

@article{arxiv.0712.1632,
  title  = {Superfluid density in gapless superconductor CeCoIn5},
  author = {V. G. Kogan and R. Prozorov and C. Petrovic},
  journal= {arXiv preprint arXiv:0712.1632},
  year   = {2007}
}

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