File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Exact ground state in an orbitally degenerate Hubbard model

TitleExact ground state in an orbitally degenerate Hubbard model
Authors
KeywordsPhysics
Issue Date1998
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 1998, v. 57 n. 11, p. 6474-6478 How to Cite?
AbstractWe present an exact solution on the ground state of a one-dimensional orbitally degenerate Hubbard model in the case of strong coupling, and the phase diagram in terms of electron filling and relevant parameters. The ground state is nondegenerate apart for spin SU(2) symmetry and a fully saturated and metallic ferromagnet except the case of the quarter filling, at which a ferromagnetic Mott insulator transition occurs. The phase diagram shows coexistence of ferromagnetism and spin-triplet pairing superconductivity when the Hund coupling is sufficiently larger. A mechanism for spin-triplet pairing superconductivity and its possible relevance to the quasi-one-dimensional organic superconductor are proposed.
Persistent Identifierhttp://hdl.handle.net/10722/43301
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2007-03-23T04:43:10Z-
dc.date.available2007-03-23T04:43:10Z-
dc.date.issued1998en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 1998, v. 57 n. 11, p. 6474-6478en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43301-
dc.description.abstractWe present an exact solution on the ground state of a one-dimensional orbitally degenerate Hubbard model in the case of strong coupling, and the phase diagram in terms of electron filling and relevant parameters. The ground state is nondegenerate apart for spin SU(2) symmetry and a fully saturated and metallic ferromagnet except the case of the quarter filling, at which a ferromagnetic Mott insulator transition occurs. The phase diagram shows coexistence of ferromagnetism and spin-triplet pairing superconductivity when the Hund coupling is sufficiently larger. A mechanism for spin-triplet pairing superconductivity and its possible relevance to the quasi-one-dimensional organic superconductor are proposed.en_HK
dc.format.extent127145 bytes-
dc.format.extent34304 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://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleExact ground state in an orbitally degenerate Hubbard modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=57&issue=11&spage=6474&epage=6478&date=1998&atitle=Exact+ground+state+in+an+orbitally+degenerate+Hubbard+modelen_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.57.6474en_HK
dc.identifier.scopuseid_2-s2.0-0000555175en_HK
dc.identifier.hkuros55910-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000555175&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue11en_HK
dc.identifier.spage6474en_HK
dc.identifier.epage6478en_HK
dc.identifier.isiWOS:000072726400048-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats