Superconductivity in Polycrystalline Diamond Thin Films

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

Superconductivity in Polycrystalline Diamond Thin Films

Superconductivity 2007-05-23 v2

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

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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 8.7K for Tc onset and 5.0K for zero resistance by transport measurements. And the upper critical field is estimated to be around 7T.

Keywords

mgb2 superconductivity thin films thin film physics

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@article{arxiv.cond-mat/0507476,
  title  = {Superconductivity in Polycrystalline Diamond Thin Films},
  author = {Yoshihiko Takano and Masanori Nagao and Tomohiro Takenouchi and Hitoshi Umezawa and Isao Sakaguchi and Masashi Tachiki and Hiroshi Kawarada},
  journal= {arXiv preprint arXiv:cond-mat/0507476},
  year   = {2007}
}

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6 pages, 6 figures

Superconductivity in Polycrystalline Diamond Thin Films

Abstract

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