Type II superconducting parameters of Tl-doped PbTe determined from heat capacity and electronic transport measurements
Y. Matsushita, P. A. Wianecki, A. T. Sommer, T. H. Geballe, I. R. Fisher
DOI 10.1103/PhysRevB.74.134512 · Physical Review B
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Abstract
Tl-doped PbTe (Pb1−xTlxTe) is an anomalous superconductor with a remarkably high maximum Tc 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb1-xTlxTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.16 | Pressure not reported | midpoint |
| Pb1-xTlxTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.38 | Pressure not reported | midpoint |
| Pb1-xTlxTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.16 | Pressure not reported | midpoint |
| Pb1-xTlxTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.38 | Pressure not reported | midpoint |
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