π-Loops With ds Josephson Junctions
We fabricated Josephson junctions (JJs) between the d-wave superconductor (SC) YBa 2 Cu 3 O 7 -x (YBCO) and the swave SC Nb (ds-JJs) on graphoepitaxially buffered MgO substrates, studied ds-JJs at temperatures down to 30 mK and employed these JJs in π-loops. Current-voltage characteristics of dsJJs...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2019-08, Vol.29 (5), p.1-5 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Faley, M. I. Reith, P. Stolyarov, V. S. Golovchanskiy, I. A. Golubov, A. A. Hilgenkamp, H. Dunin-Borkowski, R. E. |
| description | We fabricated Josephson junctions (JJs) between the d-wave superconductor (SC) YBa 2 Cu 3 O 7 -x (YBCO) and the swave SC Nb (ds-JJs) on graphoepitaxially buffered MgO substrates, studied ds-JJs at temperatures down to 30 mK and employed these JJs in π-loops. Current-voltage characteristics of dsJJs oriented along the [100] axis of YBCO exhibited up to a factor of 200 higher critical current densities than ds-JJs oriented along the [110] axis of YBCO. The critical current I and the IcRn product of [100]-oriented 3 μm wide ds-JJs are ~70 μA and ~200 μV, respectively, at 4.2 K. Rectangular arrays of up to 40 000 π-loops based on such ds-JJs were investigated using a low temperature scanning superconducting quantum interference device (SQUID) microscope. We observed ordering of spontaneously generated half integer magnetic flux quanta in the π-loops correlated with minute spurious background magnetic fields, as well as with configurations and mutual coupling of the π-loops. We manipulated the magnetic states of the π-loops by the local application of magnetic fields using nearby planar coils. This paper paves the way for the use of π-loops in computations that are based on annealing processes. |
| doi_str_mv | 10.1109/TASC.2019.2892078 |
| format | Article |
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I. ; Reith, P. ; Stolyarov, V. S. ; Golovchanskiy, I. A. ; Golubov, A. A. ; Hilgenkamp, H. ; Dunin-Borkowski, R. E.</creator><creatorcontrib>Faley, M. I. ; Reith, P. ; Stolyarov, V. S. ; Golovchanskiy, I. A. ; Golubov, A. A. ; Hilgenkamp, H. ; Dunin-Borkowski, R. E.</creatorcontrib><description>We fabricated Josephson junctions (JJs) between the d-wave superconductor (SC) YBa 2 Cu 3 O 7 -x (YBCO) and the swave SC Nb (ds-JJs) on graphoepitaxially buffered MgO substrates, studied ds-JJs at temperatures down to 30 mK and employed these JJs in π-loops. Current-voltage characteristics of dsJJs oriented along the [100] axis of YBCO exhibited up to a factor of 200 higher critical current densities than ds-JJs oriented along the [110] axis of YBCO. The critical current I and the IcRn product of [100]-oriented 3 μm wide ds-JJs are ~70 μA and ~200 μV, respectively, at 4.2 K. Rectangular arrays of up to 40 000 π-loops based on such ds-JJs were investigated using a low temperature scanning superconducting quantum interference device (SQUID) microscope. We observed ordering of spontaneously generated half integer magnetic flux quanta in the π-loops correlated with minute spurious background magnetic fields, as well as with configurations and mutual coupling of the π-loops. We manipulated the magnetic states of the π-loops by the local application of magnetic fields using nearby planar coils. This paper paves the way for the use of π-loops in computations that are based on annealing processes.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/TASC.2019.2892078</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Coils ; Critical current density ; Current voltage characteristics ; High-temperature superconductors ; Josephson junctions ; Magnetic field measurement ; Magnetic fields ; Magnetic flux ; Magnetic resonance imaging ; Mutual coupling ; quantum computing ; scanning probe microscopy ; Substrates ; Superconducting magnets ; Superconducting quantum interference devices ; superconducting quantum interference devices (SQUIDs) ; YBCO superconductors ; Yttrium barium copper oxide</subject><ispartof>IEEE transactions on applied superconductivity, 2019-08, Vol.29 (5), p.1-5</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c336t-ce0c6b5c87bc7f8ce66e7c62901515cd96b40106ad276d8192a5b5dc97bca91f3</citedby><orcidid>0000-0003-2768-2796 ; 0000-0001-8082-0647</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/8606963$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,778,782,794,27911,27912,54745</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/8606963$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Faley, M. I.</creatorcontrib><creatorcontrib>Reith, P.</creatorcontrib><creatorcontrib>Stolyarov, V. S.</creatorcontrib><creatorcontrib>Golovchanskiy, I. A.</creatorcontrib><creatorcontrib>Golubov, A. A.</creatorcontrib><creatorcontrib>Hilgenkamp, H.</creatorcontrib><creatorcontrib>Dunin-Borkowski, R. E.</creatorcontrib><title>π-Loops With ds Josephson Junctions</title><title>IEEE transactions on applied superconductivity</title><addtitle>TASC</addtitle><description>We fabricated Josephson junctions (JJs) between the d-wave superconductor (SC) YBa 2 Cu 3 O 7 -x (YBCO) and the swave SC Nb (ds-JJs) on graphoepitaxially buffered MgO substrates, studied ds-JJs at temperatures down to 30 mK and employed these JJs in π-loops. Current-voltage characteristics of dsJJs oriented along the [100] axis of YBCO exhibited up to a factor of 200 higher critical current densities than ds-JJs oriented along the [110] axis of YBCO. The critical current I and the IcRn product of [100]-oriented 3 μm wide ds-JJs are ~70 μA and ~200 μV, respectively, at 4.2 K. Rectangular arrays of up to 40 000 π-loops based on such ds-JJs were investigated using a low temperature scanning superconducting quantum interference device (SQUID) microscope. We observed ordering of spontaneously generated half integer magnetic flux quanta in the π-loops correlated with minute spurious background magnetic fields, as well as with configurations and mutual coupling of the π-loops. We manipulated the magnetic states of the π-loops by the local application of magnetic fields using nearby planar coils. This paper paves the way for the use of π-loops in computations that are based on annealing processes.</description><subject>Coils</subject><subject>Critical current density</subject><subject>Current voltage characteristics</subject><subject>High-temperature superconductors</subject><subject>Josephson junctions</subject><subject>Magnetic field measurement</subject><subject>Magnetic fields</subject><subject>Magnetic flux</subject><subject>Magnetic resonance imaging</subject><subject>Mutual coupling</subject><subject>quantum computing</subject><subject>scanning probe microscopy</subject><subject>Substrates</subject><subject>Superconducting magnets</subject><subject>Superconducting quantum interference devices</subject><subject>superconducting quantum interference devices (SQUIDs)</subject><subject>YBCO superconductors</subject><subject>Yttrium barium copper oxide</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kLFOwzAQhi0EEqXwAIglEqwpd07s2GMVUaCKxEARo5U4jpoK4mAnAxtvyCvhKBW33A3ff3f6CLlGWCGCvN-tX_MVBZQrKiSFTJyQBTImYsqQnYYZGMaC0uScXHh_AMBUpGxB7n5_4sLa3kfv7bCPah9trTf93tsu2o6dHlrb-Uty1pQf3lwd-5K8bR52-VNcvDw-5-si1knCh1gb0LxiWmSVzhqhDecm05xKwPCEriWvUkDgZU0zXguUtGQVq7UMfCmxSZbkdt7bO_s1Gj-ogx1dF04qihnjoZgIFM6UdtZ7ZxrVu_azdN8KQU0y1CRDTTLUUUbI3MyZ1hjzzwsOXPIk-QN82VnO</recordid><startdate>20190801</startdate><enddate>20190801</enddate><creator>Faley, M. I.</creator><creator>Reith, P.</creator><creator>Stolyarov, V. S.</creator><creator>Golovchanskiy, I. A.</creator><creator>Golubov, A. A.</creator><creator>Hilgenkamp, H.</creator><creator>Dunin-Borkowski, R. E.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-2768-2796</orcidid><orcidid>https://orcid.org/0000-0001-8082-0647</orcidid></search><sort><creationdate>20190801</creationdate><title>π-Loops With ds Josephson Junctions</title><author>Faley, M. I. ; Reith, P. ; Stolyarov, V. S. ; Golovchanskiy, I. A. ; Golubov, A. A. ; Hilgenkamp, H. ; Dunin-Borkowski, R. 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I.</creatorcontrib><creatorcontrib>Reith, P.</creatorcontrib><creatorcontrib>Stolyarov, V. S.</creatorcontrib><creatorcontrib>Golovchanskiy, I. A.</creatorcontrib><creatorcontrib>Golubov, A. A.</creatorcontrib><creatorcontrib>Hilgenkamp, H.</creatorcontrib><creatorcontrib>Dunin-Borkowski, R. E.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</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>Faley, M. I.</au><au>Reith, P.</au><au>Stolyarov, V. S.</au><au>Golovchanskiy, I. A.</au><au>Golubov, A. A.</au><au>Hilgenkamp, H.</au><au>Dunin-Borkowski, R. E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>π-Loops With ds Josephson Junctions</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2019-08-01</date><risdate>2019</risdate><volume>29</volume><issue>5</issue><spage>1</spage><epage>5</epage><pages>1-5</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>We fabricated Josephson junctions (JJs) between the d-wave superconductor (SC) YBa 2 Cu 3 O 7 -x (YBCO) and the swave SC Nb (ds-JJs) on graphoepitaxially buffered MgO substrates, studied ds-JJs at temperatures down to 30 mK and employed these JJs in π-loops. Current-voltage characteristics of dsJJs oriented along the [100] axis of YBCO exhibited up to a factor of 200 higher critical current densities than ds-JJs oriented along the [110] axis of YBCO. The critical current I and the IcRn product of [100]-oriented 3 μm wide ds-JJs are ~70 μA and ~200 μV, respectively, at 4.2 K. Rectangular arrays of up to 40 000 π-loops based on such ds-JJs were investigated using a low temperature scanning superconducting quantum interference device (SQUID) microscope. We observed ordering of spontaneously generated half integer magnetic flux quanta in the π-loops correlated with minute spurious background magnetic fields, as well as with configurations and mutual coupling of the π-loops. We manipulated the magnetic states of the π-loops by the local application of magnetic fields using nearby planar coils. This paper paves the way for the use of π-loops in computations that are based on annealing processes.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TASC.2019.2892078</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-2768-2796</orcidid><orcidid>https://orcid.org/0000-0001-8082-0647</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Coils Critical current density Current voltage characteristics High-temperature superconductors Josephson junctions Magnetic field measurement Magnetic fields Magnetic flux Magnetic resonance imaging Mutual coupling quantum computing scanning probe microscopy Substrates Superconducting magnets Superconducting quantum interference devices superconducting quantum interference devices (SQUIDs) YBCO superconductors Yttrium barium copper oxide |
| title | π-Loops With ds Josephson Junctions |
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