About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Physical Review B
Paper
Superconducting energy gap of BaPb1-xBixO3
Abstract
We report the first infrared measurement of the superconducting energy gap of BaPb1-xBixO3. In our polycrystalline samples with Tc9.5 K (x0.2) we obtain 23.2kTc, roughly in agreement with the weak-coupling Bardeen-Cooper-Schrieffer prediction, 23.2kTc, and with tunneling measurements of the gap. We do not observe any structure above the gap energy associated with strong coupling. © 1988 The American Physical Society.