| Zugriffsnummer | 26179 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | 1 V programmable voltage standards based on SNIS Josephson junction series arrays |
| Autor(in); Institution |
Lacquaniti, Vincenzo; National Institute of Metrological Research, Electromagnetic Division, Torino, ITALY
De Leo, Natascia; National Institute of Metrological Research, Electromagnetic Division, Torino, ITALY
Fretto, Matteo; National Institute of Metrological Research, Electromagnetic Division, Torino, ITALY
Sosso, Andrea; National Institute of Metrological Research, Electromagnetic Division, Torino, ITALY
Müller, Franz; 2.4, Quantenelektronik, PTB-Braunschweig
Kohlmann, Johannes; 2.4, Quantenelektronik, PTB-Braunschweig
|
| Quelle/Jahr | Superconductor Science and Technology: 24 (2011), 4, 045004-1 - 045004-4 |
| ISSN | 0953-2048 |
| DOI | |
| Verlag | Bristol: IOP Science |
| Klassifikationscode | PACS: 74.50.+r |
| Freie Schlagworte | Programmable Josephson voltage standard ; SNIS Josephson junction series array |
| Zusammenfassung | Binary-divided 1 V arrays were fabricated for programmable Josephson voltage standards in close cooperation between INRIM and PTB. The arrays, consisting of 8192 overdamped Nb/Al-AlOxNb SNIS Josephson junctions, were successfully operated at microwave frequencies around 70 GHz. While the characteristic voltage of the junctions ranged from 0.25 to 0.6 mV, the current margins were larger than 1 mA for the Shapiro step n = 1. In addition, flat Shapiro steps of higher order (n = 3 and 4) were generated at increased microwave power levels due to the large characteristic voltage, demonstrating the small parameter spread of the SNIS junctions. Operation at temperatures up to 6-7 K has also been verified, measuring quantized voltages up to 1.25 V on the n = 1 step. |
Zitierung
Lacquaniti, V., De Leo, N., Fretto, M., Sosso, A., Müller, F., & Kohlmann, J. (2011). 1 V programmable voltage standards based on SNIS Josephson junction series arrays. Superconductor Science and Technology, 24(4), 045004-1–045004-4. https://doi.org/10.1088/0953-2048/24/4/045004