Abstract
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.
| Original language | English |
|---|---|
| Article number | 172502 |
| Pages (from-to) | 1-3 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 86 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2005 Apr 25 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
All-MgB2 Josephson tunnel junctions. / Ueda, K.; Saito, S.; Semba, K.; Makimoto, Toshiki; Naito, M.
In: Applied Physics Letters, Vol. 86, No. 17, 172502, 25.04.2005, p. 1-3.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - All-MgB2 Josephson tunnel junctions
AU - Ueda, K.
AU - Saito, S.
AU - Semba, K.
AU - Makimoto, Toshiki
AU - Naito, M.
PY - 2005/4/25
Y1 - 2005/4/25
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=20844452042&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=20844452042&partnerID=8YFLogxK
U2 - 10.1063/1.1920411
DO - 10.1063/1.1920411
M3 - Article
AN - SCOPUS:20844452042
VL - 86
SP - 1
EP - 3
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 17
M1 - 172502
ER -