Superconducting properties of ultrathin films of YBa2Cu3Ox prepared by metalorganic chemical vapor deposition at 500°c

Hideaki Zama, Jun Saga, Takeo Hattori, Shunri Oda

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Low-temperature (500°C) growth of YBa2Cu3Ox films by metaloganic chemical vapor deposition on (100)MgO substrates using N2O as an oxidizing agent has been investigated. Films 12 unit cells thick show superconducting onset critical temperature of 89 K and zero-resistivity critical temperature of 80 K. Films 4 unit cells thick show Tc (zero) of 30 K. Films as thin as 3 unit cells thick reveal superconducting onset characteristics. If the topmost (cap) layer and the bottom (buffer) layer are nonsuperconducting, this result suggests that superconductivity arises even from monomolecular layer of YBa2Cu3Ox.

    Original languageEnglish
    Pages (from-to)L312-L314
    JournalJapanese journal of applied physics
    Volume33
    Issue number3
    DOIs
    Publication statusPublished - 1994 Mar

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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