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Article: Transport characteristics of ramp-type YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ Josephson junctions

TitleTransport characteristics of ramp-type YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ Josephson junctions
Authors
KeywordsPhysics
Issue Date2000
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter and Materials Physics), 2000, v. 62 n. 2, p. 1457-1463 How to Cite?
AbstractThe transport behaviors of YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ junctions with barrier thickness ranging from 6 to 30 nm were studied. In these junctions, the existence of a proximity layer was confirmed by the appearence of a temperature-dependent coherence length. The structure of the junctions changed from SNS to SNINS with increasing barrier thickness. It was found that the quasiparticles transport through a thin barrier by metallic conduction and through a thick barrier by tunneling conduction. In junctions with a moderate barrier thickness, we found a subgaplike feature in the conductance-voltage curves, which could be related to multiple Andreev reflection in a SNcNS Josephson junction. For junctions with a thick barrier, the dependence of conductance on temperature could be well fitted by the T4/3 law. This suggested that the quasiparticles transport across a thick PrBa2Cu3O7-y barrier layer via two localized states in an inelastic tunneling process.
Persistent Identifierhttp://hdl.handle.net/10722/43303
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, JLen_HK
dc.contributor.authorGao, Jen_HK
dc.date.accessioned2007-03-23T04:43:12Z-
dc.date.available2007-03-23T04:43:12Z-
dc.date.issued2000en_HK
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics), 2000, v. 62 n. 2, p. 1457-1463en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43303-
dc.description.abstractThe transport behaviors of YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ junctions with barrier thickness ranging from 6 to 30 nm were studied. In these junctions, the existence of a proximity layer was confirmed by the appearence of a temperature-dependent coherence length. The structure of the junctions changed from SNS to SNINS with increasing barrier thickness. It was found that the quasiparticles transport through a thin barrier by metallic conduction and through a thick barrier by tunneling conduction. In junctions with a moderate barrier thickness, we found a subgaplike feature in the conductance-voltage curves, which could be related to multiple Andreev reflection in a SNcNS Josephson junction. For junctions with a thick barrier, the dependence of conductance on temperature could be well fitted by the T4/3 law. This suggested that the quasiparticles transport across a thick PrBa2Cu3O7-y barrier layer via two localized states in an inelastic tunneling process.en_HK
dc.format.extent128394 bytes-
dc.format.extent30720 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleTransport characteristics of ramp-type YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ Josephson junctionsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=62&issue=2&spage=1457&epage=1463&date=2000&atitle=Transport+characteristics+of+ramp-type+YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ+Josephson+junctionsen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.62.1457en_HK
dc.identifier.scopuseid_2-s2.0-0000569022-
dc.identifier.isiWOS:000088190500098-

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