Reproducibility in Tunneling Achieved Through Liquid Etching of YBCO

Authors

Michael Gurvitch, Stony Brook UniversityFollow
James M. Valles, Brown UniversityFollow
Robert C. Dynes, University of California at San Diego
A. M. Cucolo, University of SalernoFollow
Lynn Schneemeyer, Montclair State UniversityFollow

Document Type

Article

Publication Date

1-1-1989

Journal / Book Title

Physica C: Superconductivity and its Applications

Abstract

We have developed a procedure for preparation of reproducible tunnel junctions of the S1IS2 type, where S1 is a chemically etched single crystal of YBa2Cu3Ox (YBCO), S2 is a film of Pb, and I is an insulting barrier of unknown nature which is formated at the surface of YBCO at 100°C in air. The structure in the dV/di (V) first appears at T = Tc = 89K and sharpens as T is decreased. There are two gap-like structures in dV/di at ∼4 and ∼19mV, and an additional structure at ∼45mV.

DOI

10.1016/0921-4534(89)90596-0

Montclair State University Digital Commons Citation

Gurvitch, Michael; Valles, James M.; Dynes, Robert C.; Cucolo, A. M.; and Schneemeyer, Lynn, "Reproducibility in Tunneling Achieved Through Liquid Etching of YBCO" (1989). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 441.
https://digitalcommons.montclair.edu/chem-biochem-facpubs/441