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Article: Strong coupling theory for superconducting iron pnictides

TitleStrong coupling theory for superconducting iron pnictides
Authors
Issue Date2009
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2009, v. 102 n. 4 How to Cite?
AbstractSuperconductivity in iron pnictides is studied by using a two-orbital Hubbard model in the large U limit. The Coulomb repulsion induces an orbital-dependent pairing between charge carriers. The pairing is found mainly from the scattering within the same Fermi pocket. The interpocket pair scatterings determine the symmetry of the superconductivity, which is extended s wave at small Hund's coupling, and d wave at large Hund's coupling and large U. The former is consistent with recent experiments of angle-resolved photoemission spectroscopy and Andreev reflection spectroscopy. © 2009 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/59619
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID
Funding AgencyGrant Number
RGC grant of HKSAR
Swiss National Foundation through the MANEP network
Funding Information:

We wish to acknowledge the partial support from RGC grant of HKSAR and from Swiss National Foundation through the MANEP network.

References

 

DC FieldValueLanguage
dc.contributor.authorChen, WQen_HK
dc.contributor.authorYang, KYen_HK
dc.contributor.authorZhou, Yen_HK
dc.contributor.authorZhang, FCen_HK
dc.date.accessioned2010-05-31T03:53:55Z-
dc.date.available2010-05-31T03:53:55Z-
dc.date.issued2009en_HK
dc.identifier.citationPhysical Review Letters, 2009, v. 102 n. 4en_HK
dc.identifier.issn0031-9007en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59619-
dc.description.abstractSuperconductivity in iron pnictides is studied by using a two-orbital Hubbard model in the large U limit. The Coulomb repulsion induces an orbital-dependent pairing between charge carriers. The pairing is found mainly from the scattering within the same Fermi pocket. The interpocket pair scatterings determine the symmetry of the superconductivity, which is extended s wave at small Hund's coupling, and d wave at large Hund's coupling and large U. The former is consistent with recent experiments of angle-resolved photoemission spectroscopy and Andreev reflection spectroscopy. © 2009 The American Physical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.orgen_HK
dc.relation.ispartofPhysical Review Lettersen_HK
dc.rightsPhysical Review Letters. Copyright © American Physical Society.en_HK
dc.titleStrong coupling theory for superconducting iron pnictidesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-9007&volume=102&spage=047006: 1&epage=4&date=2009&atitle=Strong+coupling+theory+for+superconducting+iron+pnictidesen_HK
dc.identifier.emailChen, WQ: wqchen@hku.hken_HK
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_HK
dc.identifier.authorityChen, WQ=rp00673en_HK
dc.identifier.authorityZhang, FC=rp00840en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.102.047006en_HK
dc.identifier.scopuseid_2-s2.0-60449098709en_HK
dc.identifier.hkuros155400en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-60449098709&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume102en_HK
dc.identifier.issue4en_HK
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000262978600064-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, WQ=36077405600en_HK
dc.identifier.scopusauthoridYang, KY=7404291063en_HK
dc.identifier.scopusauthoridZhou, Y=8862218900en_HK
dc.identifier.scopusauthoridZhang, FC=14012468800en_HK

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