Superconducting energy gap of BaPb1−xBixO3
Z. Schlesinger, R. T. Collins, B. A. Scott, J. A. Calise
DOI 10.1103/PhysRevB.38.9284 · Physical Review B
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Abstract
We report the first infrared measurement of the superconducting energy gap of BaPb1−xBixO3. In our polycrystalline samples with Tc≃9.5 K (x≃0.2) we obtain 2Δ≃3.2kTc, roughly in agreement with the weak-coupling Bardeen-Cooper-Schrieffer prediction, 2Δ≃3.2kTc, and with tunneling measurements of the gap. We do not observe any structure above the gap energy associated with strong coupling.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaPb1-xBixO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.5 | Pressure not reported | unknown |
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