Daniel J. Coady, Amanda C. Engler, et al.
ACS Macro Letters
We present measurements of the properties of epitaxial thin films of superconducting YBa2Cu3O7-, with Tc about 90 K, transition widths of 2.5 K, and critical currents in excess of 105A/cm2 at 77 K. The temperature dependence of the upper critical field exceeds 4 T/K for fields parallel to the film (i.e., H to the c axis) and the anisotropy of the upper critical field ranged between two and three. Our tunneling gaps (15-21 meV) are similar to previous results on ceramic and single-crystal samples of YBa2Cu3O7-. Infrared measurements of the gap energy suggest a larger value than previous measurements on polycrystalline material. The temperature dependence of the Hall coefficient is similar to that for the bulk. © 1987 The American Physical Society.
Daniel J. Coady, Amanda C. Engler, et al.
ACS Macro Letters
William G. Van der Sluys, Alfred P. Sattelberger, et al.
Polyhedron
A. Ney, R. Rajaram, et al.
Journal of Magnetism and Magnetic Materials
T.N. Morgan
Semiconductor Science and Technology