Laser-excited photoemission spectroscopy study of superconducting boron-doped diamond

K. Ishizaka, R. Eguchi, S. Tsuda, T. Kiss, T. Shimojima, T. Yokoya, S. Shin, T. Togashi, S. Watanabe, C. T. Chen, C. Q. Zhang, Y. Takano, M. Nagao, I. Sakaguchi, T. Takenouchi, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    We have investigated the low-energy electronic state of boron-doped diamond thin film by the laser-excited photoemission spectroscopy. A clear Fermi-edge is observed for samples doped above the semiconductor-metal boundary, together with the characteristic structures at 150 × n meV possibly due to the strong electron-lattice coupling effect. In addition, for the superconducting sample, we observed a shift of the leading edge below Tc indicative of a superconducting gap opening. We discuss the electron-lattice coupling and the superconductivity in doped diamond.

    Original languageEnglish
    Pages (from-to)17-21
    Number of pages5
    JournalScience and Technology of Advanced Materials
    Volume7
    Issue numberSUPPL. 1
    DOIs
    Publication statusPublished - 2006

    Fingerprint

    Diamond
    Boron
    Photoelectron spectroscopy
    Semiconductor metal boundaries
    Diamonds
    Electrons
    Lasers
    Diamond films
    Electronic states
    Superconductivity
    Thin films

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Laser-excited photoemission spectroscopy study of superconducting boron-doped diamond. / Ishizaka, K.; Eguchi, R.; Tsuda, S.; Kiss, T.; Shimojima, T.; Yokoya, T.; Shin, S.; Togashi, T.; Watanabe, S.; Chen, C. T.; Zhang, C. Q.; Takano, Y.; Nagao, M.; Sakaguchi, I.; Takenouchi, T.; Kawarada, Hiroshi.

    In: Science and Technology of Advanced Materials, Vol. 7, No. SUPPL. 1, 2006, p. 17-21.

    Research output: Contribution to journalArticle

    Ishizaka, K, Eguchi, R, Tsuda, S, Kiss, T, Shimojima, T, Yokoya, T, Shin, S, Togashi, T, Watanabe, S, Chen, CT, Zhang, CQ, Takano, Y, Nagao, M, Sakaguchi, I, Takenouchi, T & Kawarada, H 2006, 'Laser-excited photoemission spectroscopy study of superconducting boron-doped diamond', Science and Technology of Advanced Materials, vol. 7, no. SUPPL. 1, pp. 17-21. https://doi.org/10.1016/j.stam.2005.11.002
    Ishizaka, K. ; Eguchi, R. ; Tsuda, S. ; Kiss, T. ; Shimojima, T. ; Yokoya, T. ; Shin, S. ; Togashi, T. ; Watanabe, S. ; Chen, C. T. ; Zhang, C. Q. ; Takano, Y. ; Nagao, M. ; Sakaguchi, I. ; Takenouchi, T. ; Kawarada, Hiroshi. / Laser-excited photoemission spectroscopy study of superconducting boron-doped diamond. In: Science and Technology of Advanced Materials. 2006 ; Vol. 7, No. SUPPL. 1. pp. 17-21.
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    AU - Ishizaka, K.

    AU - Eguchi, R.

    AU - Tsuda, S.

    AU - Kiss, T.

    AU - Shimojima, T.

    AU - Yokoya, T.

    AU - Shin, S.

    AU - Togashi, T.

    AU - Watanabe, S.

    AU - Chen, C. T.

    AU - Zhang, C. Q.

    AU - Takano, Y.

    AU - Nagao, M.

    AU - Sakaguchi, I.

    AU - Takenouchi, T.

    AU - Kawarada, Hiroshi

    PY - 2006

    Y1 - 2006

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    AB - We have investigated the low-energy electronic state of boron-doped diamond thin film by the laser-excited photoemission spectroscopy. A clear Fermi-edge is observed for samples doped above the semiconductor-metal boundary, together with the characteristic structures at 150 × n meV possibly due to the strong electron-lattice coupling effect. In addition, for the superconducting sample, we observed a shift of the leading edge below Tc indicative of a superconducting gap opening. We discuss the electron-lattice coupling and the superconductivity in doped diamond.

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