摘要 |
A superconducting structure includes an NbN thin-film as a first superconducting thin-film layer on the upper surface of a substrate, an NbN thin-film as a second superconducting thin-film layer above the NbN thin-film, and a MgO thin-film as a protective thin-film provided between the NbN thin-film and the NbN thin-film.
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