Superconducting properties of Tl-doped PbTe

Y. Matsushita; P. A. Wianecki; T. H. Geballe; I. R. Fisher

Superconducting properties of Tl-doped PbTe

Superconductivity 2007-05-23 v1

Authors: Y. Matsushita , P. A. Wianecki , T. H. Geballe , I. R. Fisher

Abstract

Tl-doped PbTe (Pb_{1-x}Tl_{x}Te) is an anomalous superconductor with a remarkably high maximum T_c value given its relatively low carrier concentration. Here, we present results of systematic measurements of superconducting parameters for this material, for Tl concentrations up to x = 1.4%. We find that it is a Type II, weak-coupled BCS superconductor in the dirty limit and discuss implications for the applicability of the charge Kondo model recently proposed to account for superconductivity in this system.

Keywords

superconductivity PbTe thallium doping BCS superconductor charge Kondo model dirty limit

Cite

@article{arxiv.cond-mat/0605717,
  title  = {Superconducting properties of Tl-doped PbTe},
  author = {Y. Matsushita and P. A. Wianecki and T. H. Geballe and I. R. Fisher},
  journal= {arXiv preprint arXiv:cond-mat/0605717},
  year   = {2007}
}

Comments

7 pages, 6 figures

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