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Article: Impurity state in the vortex core of d-wave superconductors: Anderson impurity model versus the unitary impurity model

TitleImpurity state in the vortex core of d-wave superconductors: Anderson impurity model versus the unitary impurity model
Authors
KeywordsPhysics
Issue Date2002
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2002, v. 66 n. 10, p. 1045021-1045025 How to Cite?
AbstractUsing an extended Anderson/Kondo impurity model to describe the magnetic moments around an impurity doped in high-T c d-wave cuprates and in the framework of the slave-boson mean-field approach, we study numerically the impurity state in the vortex core by exact diagonalization of the well-established Bogoliubov-de Gennes equations. The low-energy impurity state is found to be in good agreement with scanning-tunneling-microscopy observation. After pinning a vortex on the impurity site, we compare the unitary impurity model with the extended Anderson impurity model by examining the effect of the magnetic field on the impurity state. We find that the impurity resonance in the unitary impurity model is strongly suppressed by the vortex, while it is insensitive to the field in the extended Anderson impurity model.
Persistent Identifierhttp://hdl.handle.net/10722/43362
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHan, Qen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorLi, XGen_HK
dc.contributor.authorZhang, LYen_HK
dc.date.accessioned2007-03-23T04:44:18Z-
dc.date.available2007-03-23T04:44:18Z-
dc.date.issued2002en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2002, v. 66 n. 10, p. 1045021-1045025en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43362-
dc.description.abstractUsing an extended Anderson/Kondo impurity model to describe the magnetic moments around an impurity doped in high-T c d-wave cuprates and in the framework of the slave-boson mean-field approach, we study numerically the impurity state in the vortex core by exact diagonalization of the well-established Bogoliubov-de Gennes equations. The low-energy impurity state is found to be in good agreement with scanning-tunneling-microscopy observation. After pinning a vortex on the impurity site, we compare the unitary impurity model with the extended Anderson impurity model by examining the effect of the magnetic field on the impurity state. We find that the impurity resonance in the unitary impurity model is strongly suppressed by the vortex, while it is insensitive to the field in the extended Anderson impurity model.en_HK
dc.format.extent270802 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 and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleImpurity state in the vortex core of d-wave superconductors: Anderson impurity model versus the unitary impurity modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=66&issue=10&spage=104502:1&epage=5&date=2002&atitle=Impurity+state+in+the+vortex+core+of+d-wave+superconductors:+Anderson+impurity+model+versus+the+unitary+impurity+modelen_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.66.104502en_HK
dc.identifier.scopuseid_2-s2.0-0036752574en_HK
dc.identifier.hkuros74837-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036752574&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume66en_HK
dc.identifier.issue10en_HK
dc.identifier.spage1045021en_HK
dc.identifier.epage1045025en_HK
dc.identifier.isiWOS:000178460900077-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHan, Q=7202485348en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.scopusauthoridLi, XG=8093673500en_HK
dc.identifier.scopusauthoridZhang, LY=8941895600en_HK

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