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Article: Gate-controlled superconducting proximity effect in carbon nanotubes

TitleGate-controlled superconducting proximity effect in carbon nanotubes
Authors
Issue Date1999
Citation
Science, 1999, v. 286, n. 5438, p. 263-265 How to Cite?
AbstractThe superconducting proximity effect in single-walled carbon nanotubes connected to niobium electrodes was controlled with the use of nearby gates that tune the niobium-nanotube transparency. At 4.2 kelvin, when the transparency was tuned to be high, a dip in the low-bias differential resistance was observed, indicating a proximity effect mediated by Andreev reflection. When the transparency was tuned to be low, signatures of Andreev reflection disappeared and only tunneling conduction was observed. Below ~4 kelvin, a narrow peak in differential resistance around zero bias appeared superimposed on the Andreev dip, probably as a result of electron-electron interaction competing with the proximity effect.
Persistent Identifierhttp://hdl.handle.net/10722/334052
ISSN
2023 Impact Factor: 44.7
2023 SCImago Journal Rankings: 11.902
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMorpurgo, A. F.-
dc.contributor.authorKong, J.-
dc.contributor.authorMarcus, C. M.-
dc.contributor.authorDai, H.-
dc.date.accessioned2023-10-20T06:45:17Z-
dc.date.available2023-10-20T06:45:17Z-
dc.date.issued1999-
dc.identifier.citationScience, 1999, v. 286, n. 5438, p. 263-265-
dc.identifier.issn0036-8075-
dc.identifier.urihttp://hdl.handle.net/10722/334052-
dc.description.abstractThe superconducting proximity effect in single-walled carbon nanotubes connected to niobium electrodes was controlled with the use of nearby gates that tune the niobium-nanotube transparency. At 4.2 kelvin, when the transparency was tuned to be high, a dip in the low-bias differential resistance was observed, indicating a proximity effect mediated by Andreev reflection. When the transparency was tuned to be low, signatures of Andreev reflection disappeared and only tunneling conduction was observed. Below ~4 kelvin, a narrow peak in differential resistance around zero bias appeared superimposed on the Andreev dip, probably as a result of electron-electron interaction competing with the proximity effect.-
dc.languageeng-
dc.relation.ispartofScience-
dc.titleGate-controlled superconducting proximity effect in carbon nanotubes-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1126/science.286.5438.263-
dc.identifier.scopuseid_2-s2.0-0033536581-
dc.identifier.volume286-
dc.identifier.issue5438-
dc.identifier.spage263-
dc.identifier.epage265-
dc.identifier.isiWOS:000083024400036-

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