Superconducting properties of Tl-doped PbTe

Details Superconducting properties of Tl-doped PbTe Superconducting properties of Tl-doped PbTe

2006-05-29

arxiv.org/abs/cond-mat/0605717v1

Physics

Condensed Matter

Superconductivity

7 pages, 6 figures

Scientific paper

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.

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