IEEE Transactions on Magnetics

Noise in relaxation-oscillation-driven DC SQUIDs

S.A. Gugoshnikov, O.V. Kaplunenko, Yu. V. Maslennikov, Oleg V. Snigirev

Published Mar 1, 1991• 10 citations

Abstract

The noise properties of the simple relaxation-oscillation-driven DC SQUIDs (RO-SQUIDs) have been studied. A limitation of its internal energy sensitivity E/sub v/ at a level close to 4*10/sup -31/ J/Hz due to the influence of the Josephson junction plasma oscillation has been found for the 5- mu m-design-rule technology. The signal characteristics with the transfer flux-to-voltage factor up to 2 mV/ Phi /sub 0/ and equivalent noise flux of about 1.3*10/sup -6/ Phi /sub 0//Hz/sup 1/2/ in the new all-niobium version of the balanced RO-SQUID have been measured.

DOI: 10.1109/20.133711

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