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 (IcRN product ∼0.8mV at 4.2 K), a well-defined superconducting gap (Δ=2.2–2.3mV), 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∼20K.
No takes yet. Share an insight, caveat, or question.
A 2005 study studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: