All-MgB2 Josephson tunnel junctions

K. Ueda, S. Saito, K. Semba, Toshiki Makimoto, M. Naito

Research output: Contribution to journalArticle

60 Citations (Scopus)

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 languageEnglish
Article number172502
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number17
DOIs
Publication statusPublished - 2005 Apr 25
Externally publishedYes

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tunnel junctions
molecular beam epitaxy
electric potential
products
electronics

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ueda, K., Saito, S., Semba, K., Makimoto, T., & Naito, M. (2005). All-MgB2 Josephson tunnel junctions. Applied Physics Letters, 86(17), 1-3. [172502]. https://doi.org/10.1063/1.1920411

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 journalArticle

Ueda, K, Saito, S, Semba, K, Makimoto, T & Naito, M 2005, 'All-MgB2 Josephson tunnel junctions', Applied Physics Letters, vol. 86, no. 17, 172502, pp. 1-3. https://doi.org/10.1063/1.1920411
Ueda K, Saito S, Semba K, Makimoto T, Naito M. All-MgB2 Josephson tunnel junctions. Applied Physics Letters. 2005 Apr 25;86(17):1-3. 172502. https://doi.org/10.1063/1.1920411
Ueda, K. ; Saito, S. ; Semba, K. ; Makimoto, Toshiki ; Naito, M. / All-MgB2 Josephson tunnel junctions. In: Applied Physics Letters. 2005 ; Vol. 86, No. 17. pp. 1-3.
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