Josephson effects in U-shaped YBa2Cu3O7-y microbridges

H. C. Yang, H. H. Sung, C. Y. Huang, H. E. Horng, Y. T. Lee, J. T. Lo

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have fabricated U-shape YBa2Cu3Oy high-Tc microbridges on SrTiO3(001) substrates. The bridge is microprocessed by means of photolithography and wet etching. The fabricated configuration of the bridge is 20 μm wide, 10 μm long and 10 - 40 nm thick. Current-voltage curves show a hysteretic behavior. The junction capacitance is 0.57 pF and the IcRn product is 0.5 mV at 35 K. Shapiro steps are observed under microwave irradiation; voltage spikes are occasionally observed in current-voltage curves and are owing to the absence of the phase locking in the weak links.

    Original languageEnglish
    Pages (from-to)1773-1774
    Number of pages2
    JournalPhysica B: Physics of Condensed Matter
    Volume194-196
    Issue numberPART 2
    DOIs
    Publication statusPublished - 1994 Feb 2

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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