Josephson (001) tilt grain boundary junctions of high-temperature superconductors

    Authors

    R. A. Klemm;G. B. Arnold

    Comments

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    Abbreviated Journal Title

    Int. J. Mod. Phys. B

    Keywords

    superconducting order parameter; Josephson tunneling; BI2SR2CACU2O8+DELTA; SYMMETRY; Physics, Applied; Physics, Condensed Matter; Physics, Mathematical

    Abstract

    We calculate the Josephson critical current I, across in-plane (001) tilt grain boundary junctions of high-temperature superconductors. We assume the Fermi surface has either an electron-doped form, or one of three hole-doped forms, and either random or specular tunneling across the junctions. We find that in-plane 'phase-sensitive' experiments are consistent with our results for the electron-doped superconductors. For the hole-doped superconductors, however, the results depend strongly upon the details of both the Fermi surface topology and the nature of the tunneling, and are therefore considerably less robust than has generally been believed. Hence, the tricrystal, tetracrystal, and interferometry experiments on hole-doped high-temperatures superconductors are unreliable, and should be redesigned.

    Journal Title

    International Journal of Modern Physics B

    Volume

    21

    Issue/Number

    18-19

    Publication Date

    1-1-2007

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    3194

    Last Page

    3198

    WOS Identifier

    WOS:000251989900026

    ISSN

    0217-9792

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