NDLI: Superconducting quantum interference filters operated in commercial miniature cryocoolers

Content Provider	IEEE Xplore Digital Library
Author	Oppenlaender, J. Haeussler, C. Friesch, A. Tomes, J. Caputo, P. Traeuble, T. Schopohl, N.
Copyright Year	2002
Abstract	Superconducting Quantum Interference Filters (SQIF's) are multi-loop arrays of Josephson junctions possessing unconventional grating structures. The flux-to-voltage transfer function of SQIF's is unique and has a single delta-peak like characteristics at zero applied magnetic field. The fault tolerance of SQIF's allows them to be realized in standard high-temperature grain boundary Josephson junction technology. We have successfully designed high-temperature YBCO SQIF's with voltage swings of more than 3 mV and a rather large dynamical range. This large dynamical range allows high-Tc SQIF's to be operated in commercial miniature cryocoolers at 50 K-80 K without any significant problems. Typical parasitic oscillations which are induced by the 55 Hz driven compressor of the cryocooler do not degrade the performance of SQIF's. Even if SQIF's are operated fully unshielded no significant degradation of the performance has been observed.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	936
Ending Page	939
Page Count	4
File Size	523765
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting filters SQUIDs Interference Josephson junctions High temperature superconductors Magnetic separation Degradation Gratings Transfer functions Magnetic fields superconducting quantum interference filters Josephson junction arrays magnetometers miniature cryocoolers
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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