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Article: Superconducting pairing symmetries in anisotropic triangular quantum antiferromagnets

TitleSuperconducting pairing symmetries in anisotropic triangular quantum antiferromagnets
Authors
Issue Date2006
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2006, v. 74 n. 9 How to Cite?
AbstractMotivated by the recent discovery of a low temperature spin liquid phase in layered organic compound κ- (ET)2 Cu2 (CN)3 which becomes a superconductor under pressure, we examine the phase transition of Mott insulating and superconducting (SC) states in a Hubbard-Heisenberg model on an anisotropic triangular lattice. We use a renormalized mean field theory to study the Gutzwiller projected BCS wave functions. The half filled electron system is a Mott insulator at large onsite repulsion U, and is a superconductor at a moderate U. The symmetry of the SC state depends on the anisotropy, and is gapful with d x2 - y2 +i dxy symmetry near the isotropic limit and is gapless with d x2 - y2 symmetry at small anisotropy ratio. © 2006 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/92298
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGan, JYen_HK
dc.contributor.authorChen, Yen_HK
dc.contributor.authorZhang, FCen_HK
dc.date.accessioned2010-09-17T10:41:55Z-
dc.date.available2010-09-17T10:41:55Z-
dc.date.issued2006en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2006, v. 74 n. 9en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92298-
dc.description.abstractMotivated by the recent discovery of a low temperature spin liquid phase in layered organic compound κ- (ET)2 Cu2 (CN)3 which becomes a superconductor under pressure, we examine the phase transition of Mott insulating and superconducting (SC) states in a Hubbard-Heisenberg model on an anisotropic triangular lattice. We use a renormalized mean field theory to study the Gutzwiller projected BCS wave functions. The half filled electron system is a Mott insulator at large onsite repulsion U, and is a superconductor at a moderate U. The symmetry of the SC state depends on the anisotropy, and is gapful with d x2 - y2 +i dxy symmetry near the isotropic limit and is gapless with d x2 - y2 symmetry at small anisotropy ratio. © 2006 The American Physical Society.en_HK
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.titleSuperconducting pairing symmetries in anisotropic triangular quantum antiferromagnetsen_HK
dc.typeArticleen_HK
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_HK
dc.identifier.authorityZhang, FC=rp00840en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.74.094515en_HK
dc.identifier.scopuseid_2-s2.0-33749246085en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33749246085&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume74en_HK
dc.identifier.issue9en_HK
dc.identifier.eissn1550-235X-
dc.identifier.isiWOS:000240871700079-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridGan, JY=16024720900en_HK
dc.identifier.scopusauthoridChen, Y=7601428288en_HK
dc.identifier.scopusauthoridZhang, FC=14012468800en_HK

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