Nb/Al-oxide/Nb and NbN/MgO/NbN tunnel junctions in large series arrays for voltage standards
Series arrays of 1440 Josephson tunnel junctions were fabricated out of Nb/AN-oxide/Nb- and Nb/NbN/MgO/NbN/Nb-sandwiches The arrays provide microwave-induced constant voltage steps of at least one volt. The good stability of hard superconductor tunnel junctions against room temperature storage and t...
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Published in | Japanese Journal of Applied Physics Vol. 25; no. 5; pp. L343 - L345 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Tokyo
Japanese journal of applied physics
01.05.1986
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Subjects | |
Online Access | Get full text |
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Summary: | Series arrays of 1440 Josephson tunnel junctions were fabricated out of Nb/AN-oxide/Nb- and Nb/NbN/MgO/NbN/Nb-sandwiches The arrays provide microwave-induced constant voltage steps of at least one volt. The good stability of hard superconductor tunnel junctions against room temperature storage and thermal cyling suggests that these arrays might be very useful for the constructions of practical lasting Josephson voltage standards of high precision. |
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ISSN: | 0021-4922 1347-4065 |
DOI: | 10.1143/jjap.25.l343 |