Electronic structures of heavily boron-doped superconducting diamond films

Takayoshi Yokoya, Hiroyuki Okazaki, Tetsuya Nakamura, Tomohiro Matsushita, Takayuki Muro, Eiji Ikenaga, Masaaki Kobata, Keisuke Kobayashi, Akihisa Takeuchi, Akihiro Awaji, Yoshihiko Takano, Masanori Nagao, Tomohiro Takenouchi, Hiroshi Kawarada, Tamio Oguchi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Recent photoemission studies on heavily boron-doped superconducting diamond films, reporting the electronic structure evolution as a function of boron concentrations, are reviewed. From soft X-ray angle-resolved photoemission spectroscopy, which directly measures electronic band dispersions, depopulation of electrons (or formation of hole pockets) at the top of the valence band were clearly observed. This indicates that the holes at the top of the valence bands are responsible for the metallic properties and hence superconductivity at lower temperatures. Hard X-ray photoemission spectroscopy observed shift of the main C 1s core level and intensity evolution of a lower binding energy additional structure, suggesting chemical potential shift, carrier doping efficiency by boron doping, and possibility of boron-related cluster formations.

    Original languageEnglish
    Title of host publicationMaterials Research Society Symposium Proceedings
    Pages39-46
    Number of pages8
    Volume956
    Publication statusPublished - 2007
    Event2006 MRS Fall Meeting - Boston, MA
    Duration: 2006 Nov 272006 Dec 1

    Other

    Other2006 MRS Fall Meeting
    CityBoston, MA
    Period06/11/2706/12/1

    Fingerprint

    Superconducting films
    Boron
    Diamond films
    Electronic structure
    Photoelectron spectroscopy
    Valence bands
    Doping (additives)
    Core levels
    Chemical potential
    Photoemission
    X ray spectroscopy
    Superconductivity
    Binding energy
    Dispersions
    X rays
    Electrons
    Temperature

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials

    Cite this

    Yokoya, T., Okazaki, H., Nakamura, T., Matsushita, T., Muro, T., Ikenaga, E., ... Oguchi, T. (2007). Electronic structures of heavily boron-doped superconducting diamond films. In Materials Research Society Symposium Proceedings (Vol. 956, pp. 39-46)

    Electronic structures of heavily boron-doped superconducting diamond films. / Yokoya, Takayoshi; Okazaki, Hiroyuki; Nakamura, Tetsuya; Matsushita, Tomohiro; Muro, Takayuki; Ikenaga, Eiji; Kobata, Masaaki; Kobayashi, Keisuke; Takeuchi, Akihisa; Awaji, Akihiro; Takano, Yoshihiko; Nagao, Masanori; Takenouchi, Tomohiro; Kawarada, Hiroshi; Oguchi, Tamio.

    Materials Research Society Symposium Proceedings. Vol. 956 2007. p. 39-46.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Yokoya, T, Okazaki, H, Nakamura, T, Matsushita, T, Muro, T, Ikenaga, E, Kobata, M, Kobayashi, K, Takeuchi, A, Awaji, A, Takano, Y, Nagao, M, Takenouchi, T, Kawarada, H & Oguchi, T 2007, Electronic structures of heavily boron-doped superconducting diamond films. in Materials Research Society Symposium Proceedings. vol. 956, pp. 39-46, 2006 MRS Fall Meeting, Boston, MA, 06/11/27.
    Yokoya T, Okazaki H, Nakamura T, Matsushita T, Muro T, Ikenaga E et al. Electronic structures of heavily boron-doped superconducting diamond films. In Materials Research Society Symposium Proceedings. Vol. 956. 2007. p. 39-46
    Yokoya, Takayoshi ; Okazaki, Hiroyuki ; Nakamura, Tetsuya ; Matsushita, Tomohiro ; Muro, Takayuki ; Ikenaga, Eiji ; Kobata, Masaaki ; Kobayashi, Keisuke ; Takeuchi, Akihisa ; Awaji, Akihiro ; Takano, Yoshihiko ; Nagao, Masanori ; Takenouchi, Tomohiro ; Kawarada, Hiroshi ; Oguchi, Tamio. / Electronic structures of heavily boron-doped superconducting diamond films. Materials Research Society Symposium Proceedings. Vol. 956 2007. pp. 39-46
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    author = "Takayoshi Yokoya and Hiroyuki Okazaki and Tetsuya Nakamura and Tomohiro Matsushita and Takayuki Muro and Eiji Ikenaga and Masaaki Kobata and Keisuke Kobayashi and Akihisa Takeuchi and Akihiro Awaji and Yoshihiko Takano and Masanori Nagao and Tomohiro Takenouchi and Hiroshi Kawarada and Tamio Oguchi",
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    AU - Muro, Takayuki

    AU - Ikenaga, Eiji

    AU - Kobata, Masaaki

    AU - Kobayashi, Keisuke

    AU - Takeuchi, Akihisa

    AU - Awaji, Akihiro

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