J.H. Kaufman, Owen R. Melroy, et al.
Synthetic Metals
Paper
Properties of YBaCuO Thin Film Single-Level dc SQUIDs Fabricated Using Step-Edge Junctions
Abstract
A quantitative comparison study of single-level step-edge junction-based SQUIDs and bicrystal-substrate-based SQUIDs is given. Similar SQUID performance was found in terms of white flux noise level and junction-critical-current-related 1/f noise. Excess current was found in most step-edge devices. Issues related to systems applications, such as magnetic field-induced noise, junction cyclability upon repeated use, and environmental stability of oxide-metal contacts are also discussed. © 1995 IEEE
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