Superconductivity in polycrystalline diamond thin films

Yoshihiko Takano, Masanori Nagao, Tomohiro Takenouchi, Hitoshi Umezawa, Isao Sakaguchi, Masashi Tachiki, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    63 Citations (Scopus)

    Abstract

    Superconductivity was discovered in heavily boron-doped diamond thin films deposited by the microwave plasma assisted chemical vapor deposition (MPCVD) method. Advantages of the MPCVD deposited diamond are the controllability of boron concentration in a wide range, and a high boron concentration, especially in (111) oriented films, compared to that of the high-pressure high-temperature method. The superconducting transition temperatures are determined to be 8.7 K for Tc onset and 5.0 K for zero resistance by transport measurements. And the upper critical field is estimated to be around 7 T.

    Original languageEnglish
    Pages (from-to)1936-1938
    Number of pages3
    JournalDiamond and Related Materials
    Volume14
    Issue number11-12
    DOIs
    Publication statusPublished - 2005 Nov

    Fingerprint

    Boron
    Diamond films
    Superconductivity
    boron
    superconductivity
    diamonds
    Thin films
    Chemical vapor deposition
    thin films
    Microwaves
    vapor deposition
    Plasmas
    microwaves
    Diamond
    controllability
    Controllability
    Superconducting transition temperature
    Diamonds
    transition temperature
    Temperature

    Keywords

    • (111) Orientation
    • Boron-doped diamond
    • Metal-insulator transition
    • Semiconductivity
    • Superconductivity

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Materials Chemistry
    • Surfaces, Coatings and Films
    • Surfaces and Interfaces

    Cite this

    Takano, Y., Nagao, M., Takenouchi, T., Umezawa, H., Sakaguchi, I., Tachiki, M., & Kawarada, H. (2005). Superconductivity in polycrystalline diamond thin films. Diamond and Related Materials, 14(11-12), 1936-1938. https://doi.org/10.1016/j.diamond.2005.08.014

    Superconductivity in polycrystalline diamond thin films. / Takano, Yoshihiko; Nagao, Masanori; Takenouchi, Tomohiro; Umezawa, Hitoshi; Sakaguchi, Isao; Tachiki, Masashi; Kawarada, Hiroshi.

    In: Diamond and Related Materials, Vol. 14, No. 11-12, 11.2005, p. 1936-1938.

    Research output: Contribution to journalArticle

    Takano, Y, Nagao, M, Takenouchi, T, Umezawa, H, Sakaguchi, I, Tachiki, M & Kawarada, H 2005, 'Superconductivity in polycrystalline diamond thin films', Diamond and Related Materials, vol. 14, no. 11-12, pp. 1936-1938. https://doi.org/10.1016/j.diamond.2005.08.014
    Takano Y, Nagao M, Takenouchi T, Umezawa H, Sakaguchi I, Tachiki M et al. Superconductivity in polycrystalline diamond thin films. Diamond and Related Materials. 2005 Nov;14(11-12):1936-1938. https://doi.org/10.1016/j.diamond.2005.08.014
    Takano, Yoshihiko ; Nagao, Masanori ; Takenouchi, Tomohiro ; Umezawa, Hitoshi ; Sakaguchi, Isao ; Tachiki, Masashi ; Kawarada, Hiroshi. / Superconductivity in polycrystalline diamond thin films. In: Diamond and Related Materials. 2005 ; Vol. 14, No. 11-12. pp. 1936-1938.
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