High-Tc Superconducting Electronic Devices Based on YBCO Step-Edge Grain Boundary Junctions

Shane T. KEENAN; Jia DU; Emma E. MITCHELL; Simon K. H. LAM; John C. MACFARLANE; Chris J. LEWIS; Keith E. LESLIE; Cathy P. FOLEY

doi:10.1587/transele.E96.C.298

Special Section on SQUID & its Applications

High-T_c Superconducting Electronic Devices Based on YBCO Step-Edge Grain Boundary Junctions

Shane T. KEENAN, Jia DU, Emma E. MITCHELL, Simon K. H. LAM, John C. MACFARLANE, Chris J. LEWIS, Keith E. LESLIE, Cathy P. FOLEY

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Keywords: Josephson junction, grain boundary step edge junction, high temperature superconductor, SQUID, THz imaging, mineral exploration, magnetic anomaly detection, unexploded ordnance detection, microwave devices

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2013 Volume E96.C Issue 3 Pages 298-306

DOI https://doi.org/10.1587/transele.E96.C.298

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Abstract

We outline a number of high temperature superconducting Josephson junction-based devices including superconducting quantum interference devices (SQUIDs) developed for a wide range of applications including geophysical exploration, magnetic anomaly detection, terahertz (THz) imaging and microwave communications. All these devices are based on our patented technology for fabricating YBCO step-edge junction on MgO substrates. A key feature to the successful application of devices based on this technology is good stability, long term reliability, low noise and inherent flexibility of locating junctions anywhere on a substrate.

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