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- Publisher Website: 10.1088/0953-8984/20/04/045227
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Article: Phonon-mediated unconventional superconductivity in Na xCoO 2̇yH 2O compounds
Title | Phonon-mediated unconventional superconductivity in Na xCoO 2̇yH 2O compounds |
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Authors | |
Issue Date | 2008 |
Publisher | Institute 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? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/175130 |
ISSN | 2023 Impact Factor: 2.3 2023 SCImago Journal Rankings: 0.676 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Ye, XS | en_US |
dc.contributor.author | Yao, ZJ | en_US |
dc.contributor.author | Li, JX | en_US |
dc.date.accessioned | 2012-11-26T08:49:21Z | - |
dc.date.available | 2012-11-26T08:49:21Z | - |
dc.date.issued | 2008 | en_US |
dc.identifier.citation | Journal Of Physics Condensed Matter, 2008, v. 20 n. 4 | en_US |
dc.identifier.issn | 0953-8984 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/175130 | - |
dc.description.abstract | We 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.language | eng | en_US |
dc.publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcm | en_US |
dc.relation.ispartof | Journal of Physics Condensed Matter | en_US |
dc.title | Phonon-mediated unconventional superconductivity in Na xCoO 2̇yH 2O compounds | en_US |
dc.type | Article | en_US |
dc.identifier.email | Yao, ZJ: zjyao@hku.hk | en_US |
dc.identifier.authority | Yao, ZJ=rp00828 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1088/0953-8984/20/04/045227 | en_US |
dc.identifier.scopus | eid_2-s2.0-43049124814 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-43049124814&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 20 | en_US |
dc.identifier.issue | 4 | en_US |
dc.identifier.isi | WOS:000252923200029 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Ye, XS=55222687700 | en_US |
dc.identifier.scopusauthorid | Yao, ZJ=24172115800 | en_US |
dc.identifier.scopusauthorid | Li, JX=8678926100 | en_US |
dc.identifier.issnl | 0953-8984 | - |