Observation of gap anisotropy in YBa2Cu3 O7-δ by tunneling

J. S. Tsai, I. Takeuchi, J. Fujita, T. Yoshitake, S. Miura, Shinichi Tanaka, T. Terashima, Y. Bando, K. Iijima, K. Yamamoto

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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.

Original languageEnglish
Pages (from-to)1385-1386
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Issue number2
Publication statusPublished - 1988 Jun
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Tsai, J. S., Takeuchi, I., Fujita, J., Yoshitake, T., Miura, S., Tanaka, S., ... Yamamoto, K. (1988). Observation of gap anisotropy in YBa2Cu3 O7-δ by tunneling. Physica C: Superconductivity and its Applications, 153-55(2), 1385-1386. https://doi.org/10.1016/0921-4534(88)90333-4