| Zugriffsnummer | 19970 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Josephson junction parameters for alternating current wave form synthesis |
| Autor(in); Institution |
Karpov, O. V.; National Institute of Physical-Technical and Radiotechnical Measurements, VNIIFTRI, Mendeleevo, Moscow Region, RUSSIA
Buchstaber, V. M.; National Institute of Physical-Technical and Radiotechnical Measurements, VNIIFTRI, Mendeleevo, Moscow Region, RUSSIA
Sherstobitov, S. V.; National Institute of Physical-Technical and Radiotechnical Measurements, VNIIFTRI, Mendeleevo, Moscow Region, RUSSIA
Tertychniy, S. I.; National Institute of Physical-Technical and Radiotechnical Measurements, VNIIFTRI, Mendeleevo, Moscow Region, RUSSIA
Niemeyer, Jürgen; 2.4, Quantenelektronik, PTB-Braunschweig
Kieler, Oliver; 2.4, Quantenelektronik, PTB-Braunschweig
|
| Quelle/Jahr | Journal of Applied Physics: 100 (2006), 9, 093907-1 - 093907-7 |
| ISSN | 0021-8979 |
| DOI | |
| Verlag | Melville, NY: AIP |
| Klassifikationscode | PACS: 74.81.Fa ; PACS: 74.50.+r ; PACS: 74.45.+c ; PACS: 85.25.Cp |
| Freie Schlagworte | Josephson junction parameters ; DC voltage standards ; Wave form synthesizer |
| Zusammenfassung | The paper discusses the dynamics of different types of overdamped Josephson junctions biased by a sinusoidal microwave current. The results clarify the theoretical background for optimizing the single junction and the junction array parameters for their use as alternating current (ac) wave form synthesizers. The determined phase lock areas demonstrate the degree of overlap for Shapiro steps [S. Shapiro, Phys. Rev. Lett. 11, 80 (1963)] of different orders as a function of the normalized frequency μ =2πfω-1c where f is the microwave frequency and ωsub.c is the Josephson junction characteristic frequency. For μ ≤ 0.7, which is a typical operation range for superconductor-insulator-superconductor Josephson junctions in the conventional direct current (dc) voltage standard at the bias frequency range from 10 to 100 GHz, the Shapiro steps overlap completely. For μ ≥ 1.4 [typical for superconductor-normal-superconductor junctions at the same frequency range], the steps do not overlap. This allows for ac voltage synthesis by means of binary arrays and pulse-driven systems. For 0.7 ≤ μ ≤ 1.4 there is a range of partially overlapping Shapiro steps, which allows a rapid switching of the Josephson dc voltages for ac synthesis by microwave power modulation. Experimentally we have achieved this range through properly designed superconductor-insulator-normal-insulator-superconductor junctions. |
Zitierung
Karpov, O. V., Buchstaber, V. M., Sherstobitov, S. V., Tertychniy, S. I., Niemeyer, J., & Kieler, O. (2006). Josephson junction parameters for alternating current wave form synthesis. Journal of Applied Physics, 100(9), 093907-1–093907-7. https://doi.org/10.1063/1.2358817