Response times of short Josephson junction and applications to rf SQUID's

Journal Article · Fri Aug 01 00:00:00 EDT 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.328251· OSTI ID:5181671

Ben-Jacob, E; Imry, Y

The dynamics of a small Josephson junction, driven either by a current source or by an external flux when the junction is the weak link element of a SQUID ring, were studied. Approximate analytical arguments and numerical simulations were used for the lumped circuit model of the junction. The various characteristic times of these devices were systematically obtained as functions of the parameters G and K of the junction and of the SQUID, respectively. The forms of the flux transitions and the times governing them are obtained for linear and periodic time variations of the external flux on the SQUID. A coupling of the SQUID to an LC circuit was treated. Limitations on the device parameters consistent with fast response, stability, and sensitivity were obtained both for the current driven junction and for the rf SQUID.

• Research Organization: Department of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
• OSTI ID: 5181671
• Journal Information: J. Appl. Phys.; (United States), Vol. 51:8
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SQUID DEVICES
ELECTRIC CURRENTS
JOSEPHSON JUNCTIONS
DATA
EQUIVALENT CIRCUITS
FLUCTUATIONS
MAGNETIC FLUX
TIME DEPENDENCE
CURRENTS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
FLUXMETERS
INFORMATION
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
VARIATIONS
420201* - Engineering- Cryogenic Equipment & Devices