抄録
Sandwich-type all- MgB2 Josephson tunnel junctions (MgB2 AlOx MgB2) have been fabricated with as-grown MgB2 films formed by molecular-beam epitaxy. The junctions exhibit substantial superconducting current (Ic RN product ~0.8 mV at 4.2 K), a well-defined superconducting gap (Δ=2.2-2.3 mV), and clear Fraunhofer patterns. The superconducting gap voltage of Δ agrees well with the smaller gap in the multigap scenario. The results demonstrate that MgB2 has great promise for superconducting electronics that can be operated at T~20 K.
| 本文言語 | English |
|---|---|
| 論文番号 | 172502 |
| ページ（範囲） | 1-3 |
| ページ数 | 3 |
| ジャーナル | Applied Physics Letters |
| 巻 | 86 |
| 号 | 17 |
| DOI | |
| 出版ステータス | Published - 2005 4月 25 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 物理学および天文学（その他）