Long-range superconducting proximity effect in polycrystalline Co nanowires
We report experimental evidence of a long-range superconducting proximity effect in polycrystalline Co nanowires in contact with a superconducting W-based floating electrode (inducer). For electrical resistance measurements, voltage leads were connected to the Co nanowire on both sides of the superc...
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| Veröffentlicht in: | Applied physics letters 2014-02, Vol.104 (5) |
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| container_title | Applied physics letters |
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| creator | Kompaniiets, M. Dobrovolskiy, O. V. Neetzel, C. Porrati, F. Brötz, J. Ensinger, W. Huth, M. |
| description | We report experimental evidence of a long-range superconducting proximity effect in polycrystalline Co nanowires in contact with a superconducting W-based floating electrode (inducer). For electrical resistance measurements, voltage leads were connected to the Co nanowire on both sides of the superconducting inducer at a distance of 7.2 μm. We observed a 28% reduction of the nanowire resistance when sweeping the temperature below the inducer's transition temperature Tc = 5.2 K. Our analysis of the resistance data shows that the superconducting proximity length in polycrystalline Co is as large as 1 μm at 2.4 K, attesting to a long-range proximity effect. Moreover, this long-range proximity effect is insusceptible to magnetic fields up to 11 T, which is indicative of spin-triplet pairing. Our results provide evidence that magnetic inhomogeneity of the ferromagnet enlarges the spatial extend of the spin-triplet superconducting proximity effect. |
| doi_str_mv | 10.1063/1.4863980 |
| format | Article |
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V. ; Neetzel, C. ; Porrati, F. ; Brötz, J. ; Ensinger, W. ; Huth, M.</creator><creatorcontrib>Kompaniiets, M. ; Dobrovolskiy, O. V. ; Neetzel, C. ; Porrati, F. ; Brötz, J. ; Ensinger, W. ; Huth, M.</creatorcontrib><description>We report experimental evidence of a long-range superconducting proximity effect in polycrystalline Co nanowires in contact with a superconducting W-based floating electrode (inducer). For electrical resistance measurements, voltage leads were connected to the Co nanowire on both sides of the superconducting inducer at a distance of 7.2 μm. We observed a 28% reduction of the nanowire resistance when sweeping the temperature below the inducer's transition temperature Tc = 5.2 K. Our analysis of the resistance data shows that the superconducting proximity length in polycrystalline Co is as large as 1 μm at 2.4 K, attesting to a long-range proximity effect. Moreover, this long-range proximity effect is insusceptible to magnetic fields up to 11 T, which is indicative of spin-triplet pairing. Our results provide evidence that magnetic inhomogeneity of the ferromagnet enlarges the spatial extend of the spin-triplet superconducting proximity effect.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4863980</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; COBALT ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; ELECTRIC CONDUCTIVITY ; Electric contacts ; ELECTRIC POTENTIAL ; FERROMAGNETISM ; Inhomogeneity ; MAGNETIC FIELDS ; NANOSCIENCE AND NANOTECHNOLOGY ; Nanowires ; POLYCRYSTALS ; Proximity ; PROXIMITY EFFECT ; Proximity effect (electricity) ; QUANTUM WIRES ; SPIN ; Superconductivity ; TRANSITION TEMPERATURE ; TRIPLETS</subject><ispartof>Applied physics letters, 2014-02, Vol.104 (5)</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c285t-5ca8b56ed1585e702e517643356472a6885331405023925c2fef5706391f15f93</citedby><cites>FETCH-LOGICAL-c285t-5ca8b56ed1585e702e517643356472a6885331405023925c2fef5706391f15f93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22283255$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kompaniiets, M.</creatorcontrib><creatorcontrib>Dobrovolskiy, O. 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Our analysis of the resistance data shows that the superconducting proximity length in polycrystalline Co is as large as 1 μm at 2.4 K, attesting to a long-range proximity effect. Moreover, this long-range proximity effect is insusceptible to magnetic fields up to 11 T, which is indicative of spin-triplet pairing. Our results provide evidence that magnetic inhomogeneity of the ferromagnet enlarges the spatial extend of the spin-triplet superconducting proximity effect.</description><subject>Applied physics</subject><subject>COBALT</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>ELECTRIC CONDUCTIVITY</subject><subject>Electric contacts</subject><subject>ELECTRIC POTENTIAL</subject><subject>FERROMAGNETISM</subject><subject>Inhomogeneity</subject><subject>MAGNETIC FIELDS</subject><subject>NANOSCIENCE AND NANOTECHNOLOGY</subject><subject>Nanowires</subject><subject>POLYCRYSTALS</subject><subject>Proximity</subject><subject>PROXIMITY EFFECT</subject><subject>Proximity effect (electricity)</subject><subject>QUANTUM WIRES</subject><subject>SPIN</subject><subject>Superconductivity</subject><subject>TRANSITION TEMPERATURE</subject><subject>TRIPLETS</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpFkMFKAzEURYMoWKsL_2DAlYupecm8SWYpRatYcKPrMKZJTZkmY5JB5-8dacHV48Hhcu4l5BroAmjN72BRyZo3kp6QGVAhSg4gT8mMUsrLukE4Jxcp7aYXGecz8rIOflvG1m9NkYbeRB38ZtDZ-W3Rx_Dj9i6PhbHW6Fw4X_ShG3UcU267znlTLEPhWx--XTTpkpzZtkvm6njn5P3x4W35VK5fV8_L-3WpmcRcom7lB9ZmAyjRCMoMgqgrzrGuBGtrKZFzqChSxhuGmlljUUzlGrCAtuFzcnPIDSk7lbTLRn9O3n5yVIwxyRniPzXV-BpMymoXhugnMcWACQGMUZio2wOlY0gpGqv66PZtHBVQ9beoAnVclP8CMgxl1A</recordid><startdate>20140203</startdate><enddate>20140203</enddate><creator>Kompaniiets, M.</creator><creator>Dobrovolskiy, O. 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V.</creatorcontrib><creatorcontrib>Neetzel, C.</creatorcontrib><creatorcontrib>Porrati, F.</creatorcontrib><creatorcontrib>Brötz, J.</creatorcontrib><creatorcontrib>Ensinger, W.</creatorcontrib><creatorcontrib>Huth, M.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kompaniiets, M.</au><au>Dobrovolskiy, O. V.</au><au>Neetzel, C.</au><au>Porrati, F.</au><au>Brötz, J.</au><au>Ensinger, W.</au><au>Huth, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Long-range superconducting proximity effect in polycrystalline Co nanowires</atitle><jtitle>Applied physics letters</jtitle><date>2014-02-03</date><risdate>2014</risdate><volume>104</volume><issue>5</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>We report experimental evidence of a long-range superconducting proximity effect in polycrystalline Co nanowires in contact with a superconducting W-based floating electrode (inducer). For electrical resistance measurements, voltage leads were connected to the Co nanowire on both sides of the superconducting inducer at a distance of 7.2 μm. We observed a 28% reduction of the nanowire resistance when sweeping the temperature below the inducer's transition temperature Tc = 5.2 K. Our analysis of the resistance data shows that the superconducting proximity length in polycrystalline Co is as large as 1 μm at 2.4 K, attesting to a long-range proximity effect. Moreover, this long-range proximity effect is insusceptible to magnetic fields up to 11 T, which is indicative of spin-triplet pairing. Our results provide evidence that magnetic inhomogeneity of the ferromagnet enlarges the spatial extend of the spin-triplet superconducting proximity effect.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4863980</doi></addata></record> |
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| ispartof | Applied physics letters, 2014-02, Vol.104 (5) |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics COBALT CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ELECTRIC CONDUCTIVITY Electric contacts ELECTRIC POTENTIAL FERROMAGNETISM Inhomogeneity MAGNETIC FIELDS NANOSCIENCE AND NANOTECHNOLOGY Nanowires POLYCRYSTALS Proximity PROXIMITY EFFECT Proximity effect (electricity) QUANTUM WIRES SPIN Superconductivity TRANSITION TEMPERATURE TRIPLETS |
| title | Long-range superconducting proximity effect in polycrystalline Co nanowires |
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