Electronic analogs of double-junction and single-junction SQUIDs
Creators
- 1. Becton Center, Department of Engineering and Applied Science, Yale University, New Haven, Connecticut 06520, and Department of Physics, Bucknell University, Lewisburg, Pennsylvania 17837
Description
We describe electronic analogs of a double-junction (dc) SQUID and a single-junction (rf) SQUID that are simple to construct and operate, and are considerably more flexible than those previously reported. The Josephson junction analog is based on the Resistively-Shunted Junction (RSJ) model, and uses a novel method based on a sample-and-hold circuit to generate the sin theta ''supercurrent.'' Examples are shown of the single-junction I--V characteristics, threshold curves of critical current vs applied flux and I--V curves for the double-junction SQUID analog, and rf SQUID characteristics as a function of applied flux and rf drive current. Other applications of the analogs, including the incorporation of a nonsinusoidal current-phase relation, are discussed
Additional details
Publishing Information
- Journal Title
- Rev. Sci. Instrum.
- Journal Volume
- 52
- Journal Issue
- 6
- Series
- Rev. Sci. Instrum.
- Journal Page Range
- 902-914
- ISSN
- 0034-6748
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 12632697
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANALOG SYSTEMS; DIGITAL CIRCUITS; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; JOINTS; JOSEPHSON JUNCTIONS; MAGNETIC FLUX; MATHEMATICAL MODELS; PHASE SHIFT; RESISTORS; SAMPLING; SQUID DEVICES
- Descriptors DEC
- CURRENTS; ELECTRICAL EQUIPMENT; ELECTRONIC CIRCUITS; ELECTRONIC EQUIPMENT; FLUXMETERS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; SEMICONDUCTOR JUNCTIONS; SUPERCONDUCTING DEVICES