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.
|ジャーナル||Diamond and Related Materials|
|出版ステータス||Published - 2005 11|
|イベント||Proceedings of the 10th International Conference on New Diamond Science and Technology (ICNDST-10) ICNDST-10 Special Issue - |
継続期間: 2005 5 11 → 2005 5 14
ASJC Scopus subject areas
- 化学 (全般)