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dc.contributor.authorFardmanesh, Mehdien_US
dc.contributor.authorSchubert, J.en_US
dc.contributor.authorAkram, Rizwanen_US
dc.contributor.authorBick, M.en_US
dc.contributor.authorBanzet, M.en_US
dc.contributor.authorZander, W.en_US
dc.contributor.authorZhang, Y.en_US
dc.contributor.authorKrause, H-J.en_US
dc.coverage.spatialHouston, Texas, USAen_US
dc.date.accessioned2016-02-08T11:55:52Zen_US
dc.date.available2016-02-08T11:55:52Zen_US
dc.date.issued2003en_US
dc.identifier.issn1051-8223en_US
dc.identifier.urihttp://hdl.handle.net/11693/27531en_US
dc.descriptionDate of Conference: 4-9 August 2002en_US
dc.descriptionConference Name: 2002 Applied Superconductivity Conference, ASC 2002en_US
dc.description.abstractBicrystal grain boundary (GB) Josephson junctions and rf-SQUID's were made of 200 nm thick PLD YBCO films on bi-crystal SrTiO3 substrates. The junction characteristics were studied to investigate optimal parameters in the rf-SQUID) layout designs and the limits imposed by the technology. The I c of 3 to 8 μm wide test junctions scaled with the junction widths, showing clear linear RSJ-like I-V characteristics at 77 K. All the junctions showed hysteretic RCSJ-like behavior at very low temperatures. Classical Josephson flux motion type (long junction) nonlinearity in I-V curves of all the junctions was also observed at lower temperatures with systematic dependence on the junction widths. Measurements of the magnetic field dependence of the Ic of the junctions resulted in junction width dependent well-defined Fraunhofer-pattern like characteristics. The obtained characteristics of the junctions led to feasible criteria for the rf-SQUID layouts with desired device characteristics. Rf-SQUID's were made using designs for optimal performance at 77 K while avoiding large superconducting weak links across the substrate GB. Devices with low noise characteristics and junction field sensitivities proper for operation in environmental background magnetic fields were obtained. A nonsystematic spread of optimal working temperature of the SQUID's were also observed which is associated to the spread of the junction parameters caused by the defects at the GB of substrates.en_US
dc.language.isoEnglishen_US
dc.source.titleIEEE Transactions on Applied Superconductivityen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/TASC.2003.814073en_US
dc.subjectBicrystalen_US
dc.subjectJosephson junctionen_US
dc.subjectMagnetic fielden_US
dc.subjectNoiseen_US
dc.subjectRf-SQUIDen_US
dc.subjectCurrent voltage characteristicsen_US
dc.subjectGrain boundariesen_US
dc.subjectJosephson junction devicesen_US
dc.titleNoise, junction characteristics, and magnetic field dependencies of bicrystal grain boundary junction Rf-SQUIDsen_US
dc.typeConference Paperen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.citation.spage873en_US
dc.citation.epage876en_US
dc.citation.volumeNumber13en_US
dc.citation.issueNumber2en_US
dc.identifier.doi10.1109/TASC.2003.814073en_US
dc.publisherIEEEen_US


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