Negative nonlocal and local voltages (resistances) in a quasi-one-dimensional superconducting aluminum structure
•We measured negative nonlocal and local dc voltages in a superconducting structure.•The structure consists of narrow and wide wires with critical temperatures Tn and Tw.•We found negative nonlocal and local voltages (resistances) at temperatures Tn
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| Veröffentlicht in: | Physica. C, Superconductivity Superconductivity, 2021-02, Vol.581, p.1353811, Article 1353811 |
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| container_title | Physica. C, Superconductivity |
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| creator | Kuznetsov, V.I. Trofimov, O.V. |
| description | •We measured negative nonlocal and local dc voltages in a superconducting structure.•The structure consists of narrow and wide wires with critical temperatures Tn and Tw.•We found negative nonlocal and local voltages (resistances) at temperatures Tn |
| doi_str_mv | 10.1016/j.physc.2020.1353811 |
| format | Article |
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To study a nonlocal electron transport in an aluminum superconducting quasi-one-dimensional structure, we measured negative nonlocal (local) direct current voltages in the structure in a magnetic field near the critical temperature. The structure is a normal-superconducting at Tcn<T<Tcw (Tcn and Tcw are the critical temperatures for narrow and wide wires, respectively, making up this structure). Negative voltage arises due to a quasiparticle current flowing through the N-S interface. We plotted the experimental and theoretical temperature and magnetic-field dependences of current, resistance and voltage corresponding to the peak of negative voltage, taking into account either equilibrium or nonequilibrium superconducting fluctuations.</description><identifier>ISSN: 0921-4534</identifier><identifier>EISSN: 1873-2143</identifier><identifier>DOI: 10.1016/j.physc.2020.1353811</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Aluminum ; Critical temperature ; Direct current ; Electric potential ; Electron transfer ; Electron transport ; Elementary excitations ; Magnetic fields ; negative nonlocal dc voltage ; normal-superconducting interface ; quasiparticle charge imbalance ; superconducting fluctuations ; superconducting quasi-one-dimensional wire ; Superconductivity ; Voltage</subject><ispartof>Physica. C, Superconductivity, 2021-02, Vol.581, p.1353811, Article 1353811</ispartof><rights>2021 Elsevier B.V.</rights><rights>Copyright Elsevier BV Feb 15, 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c334t-a300e252ce15ef6ade3eb62a5ae1c470d85aad7c55c93adc335254a0987e67633</citedby><cites>FETCH-LOGICAL-c334t-a300e252ce15ef6ade3eb62a5ae1c470d85aad7c55c93adc335254a0987e67633</cites><orcidid>0000-0002-3522-1482</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.physc.2020.1353811$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Kuznetsov, V.I.</creatorcontrib><creatorcontrib>Trofimov, O.V.</creatorcontrib><title>Negative nonlocal and local voltages (resistances) in a quasi-one-dimensional superconducting aluminum structure</title><title>Physica. C, Superconductivity</title><description>•We measured negative nonlocal and local dc voltages in a superconducting structure.•The structure consists of narrow and wide wires with critical temperatures Tn and Tw.•We found negative nonlocal and local voltages (resistances) at temperatures Tn<T<Tw.•Negative voltages are due to the quasiparticle charge imbalance near N-S interface.•Equilibrium and nonequilibrium superconducting fluctuations coexist in the structure.
To study a nonlocal electron transport in an aluminum superconducting quasi-one-dimensional structure, we measured negative nonlocal (local) direct current voltages in the structure in a magnetic field near the critical temperature. The structure is a normal-superconducting at Tcn<T<Tcw (Tcn and Tcw are the critical temperatures for narrow and wide wires, respectively, making up this structure). Negative voltage arises due to a quasiparticle current flowing through the N-S interface. We plotted the experimental and theoretical temperature and magnetic-field dependences of current, resistance and voltage corresponding to the peak of negative voltage, taking into account either equilibrium or nonequilibrium superconducting fluctuations.</description><subject>Aluminum</subject><subject>Critical temperature</subject><subject>Direct current</subject><subject>Electric potential</subject><subject>Electron transfer</subject><subject>Electron transport</subject><subject>Elementary excitations</subject><subject>Magnetic fields</subject><subject>negative nonlocal dc voltage</subject><subject>normal-superconducting interface</subject><subject>quasiparticle charge imbalance</subject><subject>superconducting fluctuations</subject><subject>superconducting quasi-one-dimensional wire</subject><subject>Superconductivity</subject><subject>Voltage</subject><issn>0921-4534</issn><issn>1873-2143</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kE1rHDEMhk1oIdsk_yAHQy_tYbb-GM_HpVCWNgmE5tKcjWJrN15m7Yk1s5B_H6ez5-gi8fK-QnoYu5ZiLYVsfuzX4_MrubUSqija6E7KM7aSXasrJWv9ia1Er2RVG12fsy9Ee1FK9nLFxr-4gykckccUh-Rg4BA9X6ZjGibYIfFvGSnQBNEhfechcuAvM1CoUsTKhwNGCimWBM0jZpein90U4o7DMB9CnA-cplykOeMl-7yFgfDq1C_Y45_f_za31f3Dzd3m133ltK6nCrQQqIxyKA1uG_Co8alRYAClq1vhOwPgW2eM6zX4EjLK1CD6rsWmbbS-YF-XvWNOLzPSZPdpzuVGssro3piubWVx1YvL5USUcWvHHA6QX60U9p2t3dv_bO07W3tiW2I_lxiWD44BsyUXsNDxIaObrE_h4wVvhCSGEg</recordid><startdate>20210215</startdate><enddate>20210215</enddate><creator>Kuznetsov, V.I.</creator><creator>Trofimov, O.V.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-3522-1482</orcidid></search><sort><creationdate>20210215</creationdate><title>Negative nonlocal and local voltages (resistances) in a quasi-one-dimensional superconducting aluminum structure</title><author>Kuznetsov, V.I. ; Trofimov, O.V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-a300e252ce15ef6ade3eb62a5ae1c470d85aad7c55c93adc335254a0987e67633</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aluminum</topic><topic>Critical temperature</topic><topic>Direct current</topic><topic>Electric potential</topic><topic>Electron transfer</topic><topic>Electron transport</topic><topic>Elementary excitations</topic><topic>Magnetic fields</topic><topic>negative nonlocal dc voltage</topic><topic>normal-superconducting interface</topic><topic>quasiparticle charge imbalance</topic><topic>superconducting fluctuations</topic><topic>superconducting quasi-one-dimensional wire</topic><topic>Superconductivity</topic><topic>Voltage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kuznetsov, V.I.</creatorcontrib><creatorcontrib>Trofimov, O.V.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. C, Superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kuznetsov, V.I.</au><au>Trofimov, O.V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Negative nonlocal and local voltages (resistances) in a quasi-one-dimensional superconducting aluminum structure</atitle><jtitle>Physica. C, Superconductivity</jtitle><date>2021-02-15</date><risdate>2021</risdate><volume>581</volume><spage>1353811</spage><pages>1353811-</pages><artnum>1353811</artnum><issn>0921-4534</issn><eissn>1873-2143</eissn><abstract>•We measured negative nonlocal and local dc voltages in a superconducting structure.•The structure consists of narrow and wide wires with critical temperatures Tn and Tw.•We found negative nonlocal and local voltages (resistances) at temperatures Tn<T<Tw.•Negative voltages are due to the quasiparticle charge imbalance near N-S interface.•Equilibrium and nonequilibrium superconducting fluctuations coexist in the structure.
To study a nonlocal electron transport in an aluminum superconducting quasi-one-dimensional structure, we measured negative nonlocal (local) direct current voltages in the structure in a magnetic field near the critical temperature. The structure is a normal-superconducting at Tcn<T<Tcw (Tcn and Tcw are the critical temperatures for narrow and wide wires, respectively, making up this structure). Negative voltage arises due to a quasiparticle current flowing through the N-S interface. We plotted the experimental and theoretical temperature and magnetic-field dependences of current, resistance and voltage corresponding to the peak of negative voltage, taking into account either equilibrium or nonequilibrium superconducting fluctuations.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physc.2020.1353811</doi><orcidid>https://orcid.org/0000-0002-3522-1482</orcidid></addata></record> |
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| ispartof | Physica. C, Superconductivity, 2021-02, Vol.581, p.1353811, Article 1353811 |
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| subjects | Aluminum Critical temperature Direct current Electric potential Electron transfer Electron transport Elementary excitations Magnetic fields negative nonlocal dc voltage normal-superconducting interface quasiparticle charge imbalance superconducting fluctuations superconducting quasi-one-dimensional wire Superconductivity Voltage |
| title | Negative nonlocal and local voltages (resistances) in a quasi-one-dimensional superconducting aluminum structure |
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