Selection of the best proper DC-SQUIDs in a multi-SQUID configuration
IEEE Transactions on Applied Superconductivity
680 - 682
Item Usage Stats
We have carried out experimental investigation of multi-DC-SQUID magnetometer configuration fabricated on YBa2Cu30 7-δ thin films onto 24 degree SrTiO3 bicrystal substrates by directly coupling the pick-up loop to DC-SQUIDs. The layout of the magnetometer pick-up loop was chosen as a square washer configuration by maximizing loop effective area and minimizing loop inductance. We have used De-Magnetron Sputtering technique for deposition of the films and chemical etching process for patterning the Josephson junctions having 4 μm widths. The use of multi-SQUID configuration is related to the selection of the best proper junctions for SQUID to improve the chip sensitivity with selectivity option of choosing the squid junctions rather than multichannel operation. Selection of the best junctions compared to each other depending on the junction critical currents and noise levels caused by the fabrication process and placements of the junctions on the grain boundary enable having an increased output signal of the DC-SQUID.
KeywordsBicrystal Josephson junctions
Published Version (Please cite this version)http://dx.doi.org/10.1109/TASC.2007.898152
Showing items related by title, author, creator and subject.
Dependence of the substrate structure and the film growth at the junction of YBCO SEJ rf-SQUIDs on the IBE process and effects on the SQUID's characteristics Fardmanesh, Mehdi; Schubert, J.; Akram, Rizwan; Banzet, M.; Zander, W.; Zhang, Y.; Schilling, M.; Krause, H-J. (Elsevier, 2002)Step edge junction (SEJ) rf-SQUIDs were made of 200 nm thick YBCO films on LaAlO3(100) substrates using pulsed laser deposition technique. The steps on the substrates were developed using a combination of stationary and ...
Fabrication and optimization of rf-SQUID and SQUID integration assembly for high resolution magnetic imaging systems Akram, Rizwan (Bilkent University, 2005)Superconducting QUantum Interference Devices or SQUIDs are by far the most sensitive devices known for sensing magnetic flux down to a resolution of about 10−21Wb and finds innumerous applications in various fields. In ...
Design and implementation of A 06 GHz - 09 GHz RF-SQUID Read-out system and investigation of rf-SQUID signal characteristics Eker, Taylan (Bilkent University, 2005)Design and implementation of a transceiver system for rf-SQUID (Superconducting Quantum Interference Device) operation is investigated in this work. Besides, experiments to characterize the rf-SQUID have been performed ...