Preparation and Characterization of Nb/MgO/Bi 2 Sr 2 CaCu 2 O x Junctions Using the Cleavage Planes of a Single-Crystal Superconductor

Nb/MgO/Bi-Sr-Ca-Cu-O junctions using the cleavage planes of Bi 2 Sr 2 CaCu 2 O x single crystals have been fabricated using an artificial barrier for the first time. A large step, in the order of several hundred nm on the cleavage plane, proved to be closely related to the anisotropic behavior of tu...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1992-02, Vol.31 (2R), p.231
Main Authors: Takahashi, Kazuhiko, Shimaoka, Kazuhiro, Yamano, Koji, Usuki, Tatsuro, Yorinobu Yoshisato, Yorinobu Yoshisato, Shoichi Nakano, Shoichi Nakano
Format: Article
Language:English
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Summary:Nb/MgO/Bi-Sr-Ca-Cu-O junctions using the cleavage planes of Bi 2 Sr 2 CaCu 2 O x single crystals have been fabricated using an artificial barrier for the first time. A large step, in the order of several hundred nm on the cleavage plane, proved to be closely related to the anisotropic behavior of tunneling spectroscopy through the surface of a Bi 2 Sr 2 CaCu 2 O x single crystal. This effect for the results of quasi-particle tunneling in the Nb/MgO/Bi-Sr-Ca-Cu-O junctions was in good agreement with calculated results for the local density of states in the superconductor/normal-conductor superstructure model.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.31.231