Influence of the Oxygen Content on the Tunneling Characteristics of YBa2Cu3O7-

Authors

A. M. Cucolo, University of SalernoFollow
R. Di Leo, University of SalernoFollow
Paolo Romano, University of Sannio
Lynn Schneemeyer, Montclair State UniversityFollow
Joseph V. Waszczak, University of WashingtonFollow

Document Type

Article

Publication Date

1-1-1991

Abstract

We have formed planar tunnel junctions between Pb films and YBa2Cu3O7- single crystals with different surface oxygen stoichiometries. Oxygen losses have been induced by heating the crystals at 400°C in vacuum for different times. Low-leakage tunnel junctions have also been obtained in the case of the most degraded samples. As the oxygen deficiency increases, the Y-Ba-Cu-O gaplike structure gradually broadens and shifts towards higher energies. For thermally untreated samples, tunneling spectroscopy gives information on the local Tc.

DOI

10.1103/PhysRevB.44.2857

Montclair State University Digital Commons Citation

Cucolo, A. M.; Di Leo, R.; Romano, Paolo; Schneemeyer, Lynn; and Waszczak, Joseph V., "Influence of the Oxygen Content on the Tunneling Characteristics of YBa2Cu3O7-" (1991). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 448.
https://digitalcommons.montclair.edu/chem-biochem-facpubs/448