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Article: Supercurrent and quasiparticle interference between two d-wave superconductors coupled by a normal metal or insulator

TitleSupercurrent and quasiparticle interference between two d-wave superconductors coupled by a normal metal or insulator
Authors
KeywordsPhysics
Issue Date1996
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 1996, v. 54 n. 17, p. 12509-12516 How to Cite?
AbstractIn the presence of an elastic barrier at both interfaces of a mesoscopic d-wave superconductor-normalmetal-d-wave superconductor (DND junction), the Josephson current at zero temperature is studied by using a simple matrix method. As a limiting case, the tunneling between two d-wave superconductors coupled by a insulator barrier (DID structure) is particularly addressed. The effects of sign change and anisotropic gap structure of the d x2-y2 superconductor are carefully considered in the Andreev reflection. The coupling of forward-moving quasiparticles and backward-moving quasiparticles with different pair potentials leads to contrasting Andreev spectra in different motion angle regions, which is specific to our model. Unlike conventional superconducting point-contact junctions, the conduction crossing the Fermi surface plays an important role in determining the critical current. Our theoritical results suggest that the dependence of the critical current on the grain boundary tilt angle provides a clue to identify the pairing symmetry of high-T c. superconductors.
Persistent Identifierhttp://hdl.handle.net/10722/43177
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTang, HXen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorZhu, JXen_HK
dc.date.accessioned2007-03-23T04:40:45Z-
dc.date.available2007-03-23T04:40:45Z-
dc.date.issued1996en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 1996, v. 54 n. 17, p. 12509-12516en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43177-
dc.description.abstractIn the presence of an elastic barrier at both interfaces of a mesoscopic d-wave superconductor-normalmetal-d-wave superconductor (DND junction), the Josephson current at zero temperature is studied by using a simple matrix method. As a limiting case, the tunneling between two d-wave superconductors coupled by a insulator barrier (DID structure) is particularly addressed. The effects of sign change and anisotropic gap structure of the d x2-y2 superconductor are carefully considered in the Andreev reflection. The coupling of forward-moving quasiparticles and backward-moving quasiparticles with different pair potentials leads to contrasting Andreev spectra in different motion angle regions, which is specific to our model. Unlike conventional superconducting point-contact junctions, the conduction crossing the Fermi surface plays an important role in determining the critical current. Our theoritical results suggest that the dependence of the critical current on the grain boundary tilt angle provides a clue to identify the pairing symmetry of high-T c. superconductors.en_HK
dc.format.extent172407 bytes-
dc.format.extent45056 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.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleSupercurrent and quasiparticle interference between two d-wave superconductors coupled by a normal metal or insulatoren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=54&issue=17&spage=12509&epage=12516&date=1996&atitle=Supercurrent+and+quasiparticle+interference+between+two+d-wave+superconductors+coupled+by+a+normal+metal+or+insulatoren_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.54.12509en_HK
dc.identifier.scopuseid_2-s2.0-0007342140en_HK
dc.identifier.hkuros21078-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0007342140&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume54en_HK
dc.identifier.issue17en_HK
dc.identifier.spage12509en_HK
dc.identifier.epage12516en_HK
dc.identifier.isiWOS:A1996VT68100104-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTang, HX=7403125308en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.scopusauthoridZhu, JX=7405688302en_HK

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