Magnetic Field Behavior of YBCO step-edge Josephson junctions in rf-washer SQUIDs

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dc.citation.epage1342en_US
dc.citation.issueNumber1en_US
dc.citation.spage1339en_US
dc.citation.volumeNumber11en_US
dc.contributor.authorBick, M.en_US
dc.contributor.authorSchubert, J.en_US
dc.contributor.authorFardmanesh, M.en_US
dc.contributor.authorPanaitov, G.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.date.accessioned2015-07-28T11:56:22Z
dc.date.available2015-07-28T11:56:22Z
dc.date.issued2001-03en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstracthe suppression of the critical current in YBCO Josephson junctions by the Earth's magnetic field strongly affects the operation of SQUIDs outside magnetic shielding. Commonly, one observes a modulation of the SQUID fluxvoltage transfer function amplitude, Vsq.pp, with a period of AB,, leading to an increased white flux noise level or unstable SQUID operation. Here, we report on the investigation of AB,., of rf-SQUID sensors based on step edge junctions (SEJ) operated in a flip chip configuration with coplanar resonators with integrated flux concentrators. To investigate the origin of the suppression of Vsq-pp, we opened the SQUID loop of some samples and measured the magnetic field dependence of the critical current I,(B) directly and compared it to VSqJB). It is shown that a junction width in the submicrometer scale is required for operation of the sensors in the Earth's magnetic field.en_US
dc.description.provenanceMade available in DSpace on 2015-07-28T11:56:22Z (GMT). No. of bitstreams: 1 10.1109-77.919598.pdf: 475527 bytes, checksum: b7c8fe6b47e62e68109bce41ae68d603 (MD5)en
dc.identifier.doi10.1109/77.919598en_US
dc.identifier.issn1051-8223
dc.identifier.urihttp://hdl.handle.net/11693/10941
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/77.919598en_US
dc.source.titleIEEE Transactions on Applied Superconductivityen_US
dc.subjectMagnetic Field Dependenceen_US
dc.subjectRf-squiden_US
dc.subjectSejen_US
dc.titleMagnetic Field Behavior of YBCO step-edge Josephson junctions in rf-washer SQUIDsen_US
dc.typeArticleen_US

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