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- Publisher Website: 10.1103/PhysRevB.62.1457
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Article: Transport characteristics of ramp-type YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ Josephson junctions
Title | Transport characteristics of ramp-type YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ Josephson junctions |
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Authors | |
Keywords | Physics |
Issue Date | 2000 |
Publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
Citation | Physical Review B (Condensed Matter), 2000, v. 62 n. 2, p. 1457-1463 How to Cite? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/43303 |
ISSN | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Sun, JL | en_HK |
dc.contributor.author | Gao, J | en_HK |
dc.date.accessioned | 2007-03-23T04:43:12Z | - |
dc.date.available | 2007-03-23T04:43:12Z | - |
dc.date.issued | 2000 | en_HK |
dc.identifier.citation | Physical Review B (Condensed Matter), 2000, v. 62 n. 2, p. 1457-1463 | - |
dc.identifier.issn | 0163-1829 | - |
dc.identifier.uri | http://hdl.handle.net/10722/43303 | - |
dc.description.abstract | The 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.extent | 128394 bytes | - |
dc.format.extent | 30720 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | application/msword | - |
dc.language | eng | en_HK |
dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_HK |
dc.relation.ispartof | Physical Review B (Condensed Matter) | - |
dc.rights | Copyright 2000 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.62.1457 | - |
dc.subject | Physics | en_HK |
dc.title | Transport characteristics of ramp-type YBa2Cu3O7-δ/PrBa2Cu3O7-y/YBa2Cu3O7-δ Josephson junctions | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+junctions | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1103/PhysRevB.62.1457 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0000569022 | - |
dc.identifier.isi | WOS:000088190500098 | - |
dc.identifier.issnl | 0163-1829 | - |