| Zugriffsnummer | 31508 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | An all thin-film resistive DC SQUID-a current-controlled oscillator |
| Autor(in); Institution |
Krivoy, Gennady; 9.33, Kryoelektronik, PTB-Berlin
Koch, Hans; 9.33, Kryoelektronik, PTB-Berlin
|
| Quelle/Jahr | Superconductor Science and Technology: 5 (1992), 10, 605 - 608 |
| ISSN | 0953-2048 (PRINT) ; 1361-6668 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Publ. |
| Zusammenfassung | An all thin-film resistive SQUID with two Josephson tunnel junctions has been designed, fabricated and studied. As well as the two junctions, this device consists of a low ohmic (1.9*10-6 Omega ) resistive part connected by superconducting leads to both junctions in a loop with very low ( approximately 10-11 H) inductance. A direct current flowing through the resistive part fixes the voltage difference between the two Josephson junctions that are additionally fed by a bias current. The voltage difference is converted into a signal frequency that can be picked up from the SQUID with a conversion factor of ( phi o)-1=483.6 MHz mu V-1, defined only by the electron charge and Planck's constant. An output signal level (peak-to-peak) of about 50 mu V has been obtained. The low frequency range (below 100 kHz) of the output signal frequency has been investigated. The possibilities of considerably extending this frequency range are also discussed. |
