| Zugriffsnummer | 37191 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | A low power 10V programmable array based on NbxSi1-x Josephson junctions for metrology applications |
| Autor(in); Institution |
Knipper, Richard; Leibniz Institute of Photonic Technology, Jena, GERMANY; Institut für Physikalische Chemie, Jena, GERMANY; Supracon AG, Jena, GERMANY
Anders, Solveig; Leibniz Institute of Photonic Technology, Jena, GERMANY
Schubert, Marco; Supracon AG, Jena, GERMANY; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Peiselt, Katja; Leibniz Institute of Photonic Technology, Jena, GERMANY
Scheller, Thomas; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Franke, Dirk; Leibniz Institute of Photonic Technology, Jena, GERMANY
Dellith, Jan; Leibniz Institute of Photonic Technology, Jena, GERMANY
Meyer, Hans-Georg; Leibniz Institute of Photonic Technology, Jena, GERMANY
|
| Quelle/Jahr | Superconductor Science and Technology: 29 (2016), 9, 095015-1 - 095015-7 |
| ISSN | 1361-6668 (ONLINE) ; 0953-2048 (PRINT) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Freie Schlagworte | NbxSi1−x ; metrology ; fabrication ; superconductivity |
| Zusammenfassung | Josephson junctions generate, when subjected to microwave irradiation, voltages with a very high precision and are used in metrology applications. So-called PJVS (programmable Josephson voltage-standards) are capable of generating both AC and DC voltages of up to 10 V. Our work addresses a full fabrication scenario for 10 V PJVS arrays driven at 70 GHz to be used in low microwave-power conditions as in, but not limited to GUNN diodes or cryocooler applications. NbxSi1−x in its function as a barrier material was characterised with AFM, RBS and reflectometry in order to establish a reliable technological foundation. A 10 V PJVS array driven with microwave power below 50 mW is further presented, which was achieved by optimising the fabrication technology regarding the degree of homogeneity of the Josephson junctions composition and thickness. Control over these parameters is crucial in choosing a stable and well-suited characteristic voltage (IcRn product) and critical current density jc. With this, a low-power operation of a PJVS array is possible without the need for liquid helium cooling, which is currently limiting the availability of PJVS based metrology. |
Zitierung
Knipper, R., Anders, S., Schubert, M., Peiselt, K., Scheller, T., Franke, D., Dellith, J., & Meyer, H.-G. (2016). A low power 10V programmable array based on NbxSi1-x Josephson junctions for metrology applications. Superconductor Science and Technology, 29(9), 095015-1–095015-7. https://doi.org/10.1088/0953-2048/29/9/095015