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Article: Observation of a spin-singlet proximity effect in a superconductor/ ferromagnet interface
Title | Observation of a spin-singlet proximity effect in a superconductor/ ferromagnet interface |
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Authors | |
Keywords | Superconductor/ferromagnet interface Coherence length Triplet superconductivity Proximity effect |
Issue Date | 2008 |
Citation | Journal of the Korean Physical Society, 2008, v. 52, n. 2, p. 386-390 How to Cite? |
Abstract | Since a spin-singlet superconductor (SC) and a ferromagnet (FM) have ground states with conflicting spin configurations, the superconducting order in a FM in proximity contact with a SC is bound to be suppressed. However, a rather long-range proximity effect has been observed in a metallic FM of a SC/FM junction. Recently, the possible formation of long-range spin-triplet pairing at the SC/FM interface has also been claimed. In this study, we examined the superconducting proximity effect in a simple spin-singlet SC/FM interfacial structure, where the formation of long-range spin-triplet pairing was highly unlikely. We suggest that the finite resistance reduction of the FM segment observed in this study due to the proximity contact to a SC is explicable by the ordinary short-range spin-singlet proximity effect combined with a current redistribution through the SC overlay due to the Andreev reflection at the interface of the unpolarized electrons in the FM. |
Persistent Identifier | http://hdl.handle.net/10722/262616 |
ISSN | 2023 Impact Factor: 0.8 2023 SCImago Journal Rankings: 0.213 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ki, Dong Keun | - |
dc.contributor.author | Lee, Hu Jong | - |
dc.date.accessioned | 2018-10-08T02:46:33Z | - |
dc.date.available | 2018-10-08T02:46:33Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | Journal of the Korean Physical Society, 2008, v. 52, n. 2, p. 386-390 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.uri | http://hdl.handle.net/10722/262616 | - |
dc.description.abstract | Since a spin-singlet superconductor (SC) and a ferromagnet (FM) have ground states with conflicting spin configurations, the superconducting order in a FM in proximity contact with a SC is bound to be suppressed. However, a rather long-range proximity effect has been observed in a metallic FM of a SC/FM junction. Recently, the possible formation of long-range spin-triplet pairing at the SC/FM interface has also been claimed. In this study, we examined the superconducting proximity effect in a simple spin-singlet SC/FM interfacial structure, where the formation of long-range spin-triplet pairing was highly unlikely. We suggest that the finite resistance reduction of the FM segment observed in this study due to the proximity contact to a SC is explicable by the ordinary short-range spin-singlet proximity effect combined with a current redistribution through the SC overlay due to the Andreev reflection at the interface of the unpolarized electrons in the FM. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of the Korean Physical Society | - |
dc.subject | Superconductor/ferromagnet interface | - |
dc.subject | Coherence length | - |
dc.subject | Triplet superconductivity | - |
dc.subject | Proximity effect | - |
dc.title | Observation of a spin-singlet proximity effect in a superconductor/ ferromagnet interface | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.3938/jkps.52.386 | - |
dc.identifier.scopus | eid_2-s2.0-40049094332 | - |
dc.identifier.volume | 52 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 386 | - |
dc.identifier.epage | 390 | - |
dc.identifier.isi | WOS:000253259400035 | - |
dc.identifier.issnl | 0374-4884 | - |