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Publication Citation: Weak versus Strong Coupling Theory for Bi2Sr2CaCu2O8

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Author(s): Marvin Cohen; David R. Penn;
Title: Weak versus Strong Coupling Theory for Bi2Sr2CaCu2O8
Published: January 01, 1990
Abstract: The latest optical determination of the superconducting-gap function for Bi2Sr2CaCu2O8 is consistent with weak-coupling theory. In contrast, a large discontinuity in heat-capacity data suggests strong-coupling superconductivity, and appears to exceed the theoretical strong-coupling limit. A possible resolution to the apparent incompatibility of the two measurements is presented. The apparent disagreement with the results of strong-coupling theory is also resolved.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 42
Issue: 13
Pages: pp. 8702 - 8703
Research Areas: Condensed Matter Physics