G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
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.
G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
P. Martensson, R.M. Feenstra
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Z. Schlesinger, S. Allen, et al.
ICPS Physics of Semiconductors 1984
J.A. Barker, D. Henderson, et al.
Molecular Physics