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Article: Phonon-mediated unconventional superconductivity in Na xCoO 2̇yH 2O compounds

TitlePhonon-mediated unconventional superconductivity in Na xCoO 2̇yH 2O compounds
Authors
Ye, XSYao, ZJLi, JX
Issue Date2008
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcm
Citation
Journal Of Physics Condensed Matter, 2008, v. 20 n. 4 How to Cite?
DOI: http://dx.doi.org/10.1088/0953-8984/20/04/045227
AbstractWe investigate the symmetry of the superconducting gap induced by dominant small-q phonon scattering in a triangular lattice. Using the energy band appropriate for Na xCoO 2yH 2O and solving the BCS-like gap equation within the weak coupling theory self-consistently, we find that an f-wave pairing state is favored in this system. It is a consequence of the combined effects of the momentum decoupling due to the small-q phonon scattering, the anisotropy of the local density of states (DOS) in the momentum space and the sufficient effective Coulomb repulsion. We propose that this scenario may provide a new picture for the superconductivity in Na xCoO 2yH 2O compounds. © IOP Publishing Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/175130
ISSN
0953-8984
2021 Impact Factor: 2.745
2020 SCImago Journal Rankings: 0.908
ISI Accession Number ID
WOS:000252923200029
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorYe, XSen_US
dc.contributor.authorYao, ZJen_US
dc.contributor.authorLi, JXen_US
dc.date.accessioned2012-11-26T08:49:21Z-
dc.date.available2012-11-26T08:49:21Z-
dc.date.issued2008en_US
dc.identifier.citationJournal Of Physics Condensed Matter, 2008, v. 20 n. 4en_US
dc.identifier.issn0953-8984en_US
dc.identifier.urihttp://hdl.handle.net/10722/175130-
dc.description.abstractWe investigate the symmetry of the superconducting gap induced by dominant small-q phonon scattering in a triangular lattice. Using the energy band appropriate for Na xCoO 2yH 2O and solving the BCS-like gap equation within the weak coupling theory self-consistently, we find that an f-wave pairing state is favored in this system. It is a consequence of the combined effects of the momentum decoupling due to the small-q phonon scattering, the anisotropy of the local density of states (DOS) in the momentum space and the sufficient effective Coulomb repulsion. We propose that this scenario may provide a new picture for the superconductivity in Na xCoO 2yH 2O compounds. © IOP Publishing Ltd.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcmen_US
dc.relation.ispartofJournal of Physics Condensed Matteren_US
dc.titlePhonon-mediated unconventional superconductivity in Na xCoO 2̇yH 2O compoundsen_US
dc.typeArticleen_US
dc.identifier.emailYao, ZJ: zjyao@hku.hken_US
dc.identifier.authorityYao, ZJ=rp00828en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/0953-8984/20/04/045227en_US
dc.identifier.scopuseid_2-s2.0-43049124814en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-43049124814&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume20en_US
dc.identifier.issue4en_US
dc.identifier.isiWOS:000252923200029-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridYe, XS=55222687700en_US
dc.identifier.scopusauthoridYao, ZJ=24172115800en_US
dc.identifier.scopusauthoridLi, JX=8678926100en_US
dc.identifier.issnl0953-8984-

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