Properties of asymmetric high critical temperature dc SQUIDs
Asymmetries between the two Josephson junctions of a dc-SQUID have always been considered undesirable spurious effects, responsible for the degradation of the device performance. However, it was recently demonstrated that a suitable choice of the asymmetric configuration can lead to magnetic flux no...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2001-03, Vol.11 (1), p.908-911 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Testa, G. Pagano, S. Sarnelli, E. Calidonna, C.R. Furnari, M.M. Russo, M. |
| description | Asymmetries between the two Josephson junctions of a dc-SQUID have always been considered undesirable spurious effects, responsible for the degradation of the device performance. However, it was recently demonstrated that a suitable choice of the asymmetric configuration can lead to magnetic flux noise values lower than symmetric ones. The numerical analysis was performed by using parameters typical of low-Tc SQUIDs, operating at the liquid helium temperature. In this paper, the analysis has been extended to high critical temperature dc SQUIDs, operating at the liquid nitrogen temperature. Also in this case, asymmetric SQUIDs show the best performance in terms of both flux to voltage transfer coefficient V/sub /spl Phi// and magnetic flux noise S/sub /spl Phi//. In order to optimize the device performance, the dependence of SQUID properties on damping resistance and normalized SQUID inductance has been computed for both symmetric and asymmetric configurations. |
| doi_str_mv | 10.1109/77.919492 |
| format | Article |
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However, it was recently demonstrated that a suitable choice of the asymmetric configuration can lead to magnetic flux noise values lower than symmetric ones. The numerical analysis was performed by using parameters typical of low-Tc SQUIDs, operating at the liquid helium temperature. In this paper, the analysis has been extended to high critical temperature dc SQUIDs, operating at the liquid nitrogen temperature. Also in this case, asymmetric SQUIDs show the best performance in terms of both flux to voltage transfer coefficient V/sub /spl Phi// and magnetic flux noise S/sub /spl Phi//. In order to optimize the device performance, the dependence of SQUID properties on damping resistance and normalized SQUID inductance has been computed for both symmetric and asymmetric configurations.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/77.919492</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Degradation ; Electronics ; Exact sciences and technology ; Helium ; Josephson junctions ; Magnetic analysis ; Magnetic flux ; Magnetic noise ; Nitrogen ; Numerical analysis ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; SQUIDs ; Superconducting devices ; Temperature</subject><ispartof>IEEE transactions on applied superconductivity, 2001-03, Vol.11 (1), p.908-911</ispartof><rights>2001 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c363t-1c9e0f56e67360b78b2f55daec3185231ec2c5a9ba9f8bfd97f4e03f973f81c83</citedby><cites>FETCH-LOGICAL-c363t-1c9e0f56e67360b78b2f55daec3185231ec2c5a9ba9f8bfd97f4e03f973f81c83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/919492$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,796,23930,23931,25140,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/919492$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=982475$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Testa, G.</creatorcontrib><creatorcontrib>Pagano, S.</creatorcontrib><creatorcontrib>Sarnelli, E.</creatorcontrib><creatorcontrib>Calidonna, C.R.</creatorcontrib><creatorcontrib>Furnari, M.M.</creatorcontrib><creatorcontrib>Russo, M.</creatorcontrib><title>Properties of asymmetric high critical temperature dc SQUIDs</title><title>IEEE transactions on applied superconductivity</title><addtitle>TASC</addtitle><description>Asymmetries between the two Josephson junctions of a dc-SQUID have always been considered undesirable spurious effects, responsible for the degradation of the device performance. However, it was recently demonstrated that a suitable choice of the asymmetric configuration can lead to magnetic flux noise values lower than symmetric ones. The numerical analysis was performed by using parameters typical of low-Tc SQUIDs, operating at the liquid helium temperature. In this paper, the analysis has been extended to high critical temperature dc SQUIDs, operating at the liquid nitrogen temperature. Also in this case, asymmetric SQUIDs show the best performance in terms of both flux to voltage transfer coefficient V/sub /spl Phi// and magnetic flux noise S/sub /spl Phi//. In order to optimize the device performance, the dependence of SQUID properties on damping resistance and normalized SQUID inductance has been computed for both symmetric and asymmetric configurations.</description><subject>Applied sciences</subject><subject>Degradation</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Helium</subject><subject>Josephson junctions</subject><subject>Magnetic analysis</subject><subject>Magnetic flux</subject><subject>Magnetic noise</subject><subject>Nitrogen</subject><subject>Numerical analysis</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>SQUIDs</subject><subject>Superconducting devices</subject><subject>Temperature</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqN0EtLAzEUBeAgCtbqwq2rQUFwMTWPySQBN1JfhYKKdh0y6Y1N6XRqMrPovzcyRcGVq1zIdw_cg9ApwSNCsLoWYqSIKhTdQwPCucwpJ3w_zZiTXFLKDtFRjEuMSSELPkA3L6HZQGg9xKxxmYnbuoY2eJst_Mcis8G33ppV1kKdmGm7ANncZm-vs8ldPEYHzqwinOzeIZo93L-Pn_Lp8-NkfDvNLStZmxOrADteQilYiSshK-o4nxuwjEhOGQFLLTeqMsrJys2VcAVg5pRgThIr2RBd9rmb0Hx2EFtd-2hhtTJraLqoqeREMv4PWEpJcKESPP8Dl00X1ukIrRQrKVGMJnTVIxuaGAM4vQm-NmGrCdbfbWshdN92she7QBNTXy6YtfXxZ0FJWgie1FmvPAD8fvYRX9FshQI</recordid><startdate>20010301</startdate><enddate>20010301</enddate><creator>Testa, G.</creator><creator>Pagano, S.</creator><creator>Sarnelli, E.</creator><creator>Calidonna, C.R.</creator><creator>Furnari, M.M.</creator><creator>Russo, M.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20010301</creationdate><title>Properties of asymmetric high critical temperature dc SQUIDs</title><author>Testa, G. ; Pagano, S. ; Sarnelli, E. ; Calidonna, C.R. ; Furnari, M.M. ; Russo, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c363t-1c9e0f56e67360b78b2f55daec3185231ec2c5a9ba9f8bfd97f4e03f973f81c83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Applied sciences</topic><topic>Degradation</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Helium</topic><topic>Josephson junctions</topic><topic>Magnetic analysis</topic><topic>Magnetic flux</topic><topic>Magnetic noise</topic><topic>Nitrogen</topic><topic>Numerical analysis</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>SQUIDs</topic><topic>Superconducting devices</topic><topic>Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Testa, G.</creatorcontrib><creatorcontrib>Pagano, S.</creatorcontrib><creatorcontrib>Sarnelli, E.</creatorcontrib><creatorcontrib>Calidonna, C.R.</creatorcontrib><creatorcontrib>Furnari, M.M.</creatorcontrib><creatorcontrib>Russo, M.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on applied superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Testa, G.</au><au>Pagano, S.</au><au>Sarnelli, E.</au><au>Calidonna, C.R.</au><au>Furnari, M.M.</au><au>Russo, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Properties of asymmetric high critical temperature dc SQUIDs</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2001-03-01</date><risdate>2001</risdate><volume>11</volume><issue>1</issue><spage>908</spage><epage>911</epage><pages>908-911</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>Asymmetries between the two Josephson junctions of a dc-SQUID have always been considered undesirable spurious effects, responsible for the degradation of the device performance. However, it was recently demonstrated that a suitable choice of the asymmetric configuration can lead to magnetic flux noise values lower than symmetric ones. The numerical analysis was performed by using parameters typical of low-Tc SQUIDs, operating at the liquid helium temperature. In this paper, the analysis has been extended to high critical temperature dc SQUIDs, operating at the liquid nitrogen temperature. Also in this case, asymmetric SQUIDs show the best performance in terms of both flux to voltage transfer coefficient V/sub /spl Phi// and magnetic flux noise S/sub /spl Phi//. In order to optimize the device performance, the dependence of SQUID properties on damping resistance and normalized SQUID inductance has been computed for both symmetric and asymmetric configurations.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/77.919492</doi><tpages>4</tpages></addata></record> |
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| subjects | Applied sciences Degradation Electronics Exact sciences and technology Helium Josephson junctions Magnetic analysis Magnetic flux Magnetic noise Nitrogen Numerical analysis Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices SQUIDs Superconducting devices Temperature |
| title | Properties of asymmetric high critical temperature dc SQUIDs |
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