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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
IEICE TRANSACTIONS on Electronics
Publication Date: 2013/03/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on SQUID & its Applications)
Josephson junction, grain boundary step edge junction, high temperature superconductor, SQUID, THz imaging, mineral exploration, magnetic anomaly detection, unexploded ordnance detection, microwave devices,
Full Text: FreePDF(3.7MB)
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.