C.M. Brown, L. Cristofolini, et al.
Chemistry of Materials
We have measured the superconducting energy gap of high-critical- temperature (Tc90 K) YBa2Cu3O9-y samples using tunneling and infrared techniques. From our tunneling data, we place limits on the reduced superconducting energy gap of 3.7<2/kBTc<5.6. The tunneling gaps for a single-crystal sample are essentially the same if the tunneling tip is oriented either parallel or perpendicular to the CuO planes. The infrared measurements give a smaller apparent gap. We discuss the origins of the differences between the infrared and tunneling results. © 1987 The American Physical Society.
C.M. Brown, L. Cristofolini, et al.
Chemistry of Materials
Andreas C. Cangellaris, Karen M. Coperich, et al.
EMC 2001
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SPIE AeroSense 1997
A.B. McLean, R.H. Williams
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