We present numerical investigation of the RF properties of a double-junction SQUID model, which is referred to as an RF-field-driven double-junction SQUID (RFDS). The RFDS generates large current steps, the order of which can be controlled by external dc field. We simulate the current-voltage characteristics of the RFDS in the normalized frequency range from 0.065 to 5.0. In comparison with the results for a single junction, the step heights of the RFDS are much larger for the low frequency region; e.g. the first step of the RFDS becomes nine times larger than that of a single junction when a dc flux of 0.5φ0 is applied (φ0 is a flux quantum). For the high frequency region, the step height of the RFDS is comparable to that of a single junction. The results suggest that the RFDS should be applicable as a wide-band RF detector.
|ジャーナル||Superconductor Science and Technology|
|出版ステータス||Published - 1999 11月|
|イベント||Proceedings of the 1999 International Superconductive Electronics Conference - Berkeley, CA, USA|
継続期間: 1999 6月 21 → 1999 6月 25
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