| Zugriffsnummer | 45847 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Stacked Josephson junction arrays for the pulse-driven AC Josephson voltage standard |
| Autor(in); Institution |
Kieler, Oliver; 2.4, Quantenelektronik, PTB-Braunschweig
Wendisch, Rüdiger; 2.4, Quantenelektronik, PTB-Braunschweig
Gerdau, Rolf; 2.4, Quantenelektronik, PTB-Braunschweig
Weimann, Thomas; 2.4, Quantenelektronik, PTB-Braunschweig
Kohlmann, Johannes; 2.4, Quantenelektronik, PTB-Braunschweig
Behr, Ralf; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
|
| Quelle/Jahr | IEEE Transactions on Applied Superconductivity: 31 (2021), 5, 1 - 5 |
| ISSN | 1051-8223 (PRINT) ; 1558-2515 (ONLINE) ; 2378-7074 (CD) |
| DOI | |
| Verlag | New York, NY: IEEE |
| Konferenzangaben | Applied Superconductivity Conference, Virtual Conference, 24, Oktober - 07, November, 2020 |
| Freie Schlagworte | AC Josephson voltage standard ; Josephson arbitrary waveform synthesizer ; SNS Josephson junction ; stacked Josephson junctions ; self-synchronization |
| Zusammenfassung | We developed a fabrication process to establish large arrays of up to 5-stacked Josephson junctions for the Josephson Arbitrary Waveform Synthesizer (JAWS). SNS-type Josephson junctions with NbxSi1-x barriers are used for this application. By modifying our standard window process, e.g. to add a CMP (chemical mechanical polishing) and an ALD (atomic layer deposition) step, the yield of this process was increased. An output voltage of 1 V RMS could be achieved by using 4 JAWS arrays in series with a total number of 60,000 5-stacked junctions. The investigation of the current-voltage characteristics (IVC) showed an interesting and potentially useful feature. The required pulse amplitude per junction for getting themaximum Shapiro step width reduces for higher junction stacks. We found that the pulse power linearly reduces with the square of the junction number in the array. The origin of this effect might be a strong neighbour neighbour interaction of the junctions, which are closely arranged within the stacked configuration. This might generate a strong self-synchronization of the junctions. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY-NC-ND 4.0 ; Creative Commons Attribution NonCommercial NoDerivatives 4.0 License |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
Zitierung
Kieler, O., Wendisch, R., Gerdau, R., Weimann, T., Kohlmann, J., & Behr, R. (2021). Stacked Josephson junction arrays for the pulse-driven AC Josephson voltage standard. IEEE Transactions on Applied Superconductivity, 31(5), 1–5. https://doi.org/10.1109/tasc.2021.3060678