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Article: Vortex State in NaxCoO2·yH2O: px±ipy–Wave Versus dx2–y2±idxy–Wave Pairing

TitleVortex State in NaxCoO2·yH2O: px±ipy–Wave Versus dx2–y2±idxy–Wave Pairing
Authors
KeywordsPhysics
Issue Date2004
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2004, v. 92 n. 2, p. 027004:1-4 How to Cite?
AbstractBased on an effective Hamiltonian specified in the triangular lattice with possible px±ipy– or dx2–y2±idxy–wave pairing, which has close relevance to the newly discovered Na0.35CoO2·yH2O, the electronic structure of the vortex state is studied by solving the Bogoliubov–de Gennes equations. It is found that px±ipy wave is favored for the electron doping as the hopping integral t<0. The lowest-lying vortex bound states are found to have, respectively, zero and positive energies for px±ipy– and dx2–y2±idxy–wave superconductors, whose vortex structures exhibit the intriguing sixfold symmetry. In the presence of strong on-site repulsion, the antiferromagnetic order and local ferromagnetic moment are induced around the vortex cores for the former and the latter, respectively, both of which cause the splitting of the local density of states peaks due to the lifting of spin degeneracy.
Persistent Identifierhttp://hdl.handle.net/10722/42491
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHan, Qen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorWang, QHen_HK
dc.contributor.authorXia, Ten_HK
dc.date.accessioned2007-01-29T08:51:03Z-
dc.date.available2007-01-29T08:51:03Z-
dc.date.issued2004en_HK
dc.identifier.citationPhysical Review Letters, 2004, v. 92 n. 2, p. 027004:1-4en_HK
dc.identifier.issn0031-9007en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42491-
dc.description.abstractBased on an effective Hamiltonian specified in the triangular lattice with possible px±ipy– or dx2–y2±idxy–wave pairing, which has close relevance to the newly discovered Na0.35CoO2·yH2O, the electronic structure of the vortex state is studied by solving the Bogoliubov–de Gennes equations. It is found that px±ipy wave is favored for the electron doping as the hopping integral t<0. The lowest-lying vortex bound states are found to have, respectively, zero and positive energies for px±ipy– and dx2–y2±idxy–wave superconductors, whose vortex structures exhibit the intriguing sixfold symmetry. In the presence of strong on-site repulsion, the antiferromagnetic order and local ferromagnetic moment are induced around the vortex cores for the former and the latter, respectively, both of which cause the splitting of the local density of states peaks due to the lifting of spin degeneracy.en_HK
dc.format.extent206515 bytes-
dc.format.extent28672 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://prl.aps.orgen_HK
dc.relation.isformatofPhysical Review Letters-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleVortex State in NaxCoO2·yH2O: px±ipy–Wave Versus dx2–y2±idxy–Wave Pairingen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-9007&volume=92&issue=2&spage=027004:1&epage=4&date=2004&atitle=Vortex+State+in+NaxCoO2·yH2O:+px±ipy–Wave+Versus+dx2–y2±idxy–Wave+Pairingen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevLett.92.027004en_HK
dc.identifier.scopuseid_2-s2.0-84862052809-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84862052809&selection=ref&src=s&origin=recordpage-
dc.identifier.isiWOS:000188187100043-
dc.publisher.placeUnited States-
dc.identifier.scopusauthoridHan, Q=7202485348-
dc.identifier.scopusauthoridWang, ZD=14828459100-
dc.identifier.scopusauthoridXia, T=7101653324-
dc.identifier.scopusauthoridWang, QH=7406916485-

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