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

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

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
Volume153-55
Issue number2
DOIs
Publication statusPublished - 1988 Jun
Externally publishedYes

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Anisotropy
anisotropy
Energy gap
Cryogenics
cryogenics
Electrodes
electrodes
Substrates
Direction compound

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

Observation of gap anisotropy in YBa2Cu3 O7-δ by tunneling. / Tsai, J. S.; Takeuchi, I.; Fujita, J.; Yoshitake, T.; Miura, S.; Tanaka, Shinichi; Terashima, T.; Bando, Y.; Iijima, K.; Yamamoto, K.

In: Physica C: Superconductivity and its Applications, Vol. 153-55, No. 2, 06.1988, p. 1385-1386.

Research output: Contribution to journalArticle

Tsai, JS, Takeuchi, I, Fujita, J, Yoshitake, T, Miura, S, Tanaka, S, Terashima, T, Bando, Y, Iijima, K & Yamamoto, K 1988, 'Observation of gap anisotropy in YBa2Cu3 O7-δ by tunneling', Physica C: Superconductivity and its Applications, vol. 153-55, no. 2, pp. 1385-1386. https://doi.org/10.1016/0921-4534(88)90333-4
Tsai, J. S. ; Takeuchi, I. ; Fujita, J. ; Yoshitake, T. ; Miura, S. ; Tanaka, Shinichi ; Terashima, T. ; Bando, Y. ; Iijima, K. ; Yamamoto, K. / Observation of gap anisotropy in YBa2Cu3 O7-δ by tunneling. In: Physica C: Superconductivity and its Applications. 1988 ; Vol. 153-55, No. 2. pp. 1385-1386.
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