Superconductive energy gap of YBa$2$/Cu3O7-δ are measured in a novel broken film edge junction. (001) (103) and 110) oriented films are broken in a cryogenic environment along the appropriate directions together with the SiTiO3 substrate. Pb electrode is brought close in situ to the clean broken film edge. The normalized energy gap 2δ(0)/kBTc measured in the direction along and perpendicular to the Cu-O plane are found to be 5.9±0.2 and 3.6±0.2, respectively. These values are independent of the variation in the values of Tc within the examined range of 40K to about 90 K.
ASJC Scopus subject areas
- Condensed Matter Physics