Superconductivity in polycrystalline diamond thin films

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

Research output: Contribution to journalConference article

66 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 1
EventProceedings of the 10th International Conference on New Diamond Science and Technology (ICNDST-10) ICNDST-10 Special Issue -
Duration: 2005 May 112005 May 14

Keywords

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Materials Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Superconductivity in polycrystalline diamond thin films'. Together they form a unique fingerprint.

  • 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