Substrate step-edge YBa2Cu3O7 rf SQUIDs
- 4 February 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 58 (5) , 543-545
- https://doi.org/10.1063/1.104581
Abstract
We have developed a technique which permits high‐yield fabrication of microbridges and low noise YBa2Cu3O7 superconducting quantum interference devices (SQUIDs) in epitaxial thin films. These SQUIDs operate over a wide temperature range extending from 4 K to close to the superconducting transition temperature. Measurements of an rf SQUID operating at 77 K give a peak‐to‐peak flux sensitivity of 36 μV/Φ0 and a flux noise at 10 Hz of 1.5× 10−4 Φ0/√Hz. Device yields over 80% have been obtained.Keywords
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