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Article: Ferromagnetic ground state in the Kondo lattice model

TitleFerromagnetic ground state in the Kondo lattice model
Authors
Keywords75.10.Lp Band and itinerant models
75.50.-y Studies of specific magnetic materials
Issue Date1998
PublisherSpringer Verlag. The Journal's web site is located at http://www.edpsciences.org/journal/index.cfm?edpsname=epjb
Citation
European Physical Journal B, 1998, v. 2 n. 1, p. 11-16 How to Cite?
AbstractWe present a series of rigorous examples of the Kondo lattice model that exhibit full ferromagnetism in the ground state. The models are defined in one-, two- and three-dimensional lattices, and are characterized by a range of hopping terms, specific electron filling, and large ferromagnetic coupling. Our examples show that a sufficient strong but finite exchange coupling between conduction electrons and localized spins could overcome the competition from mobility of a finite density of electrons and drive the system from a paramagnetic phase to a ferromagnetic phase. We also establish a relation of ferromagnetism between the Hubbard model and Kondo lattice model. Meanwhile some rigorous results on ferromagnetism in the corresponding Hubbard model are presented.
Persistent Identifierhttp://hdl.handle.net/10722/80822
ISSN
2015 Impact Factor: 1.223
2015 SCImago Journal Rankings: 0.524
References

 

DC FieldValueLanguage
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2010-09-06T08:10:39Z-
dc.date.available2010-09-06T08:10:39Z-
dc.date.issued1998en_HK
dc.identifier.citationEuropean Physical Journal B, 1998, v. 2 n. 1, p. 11-16en_HK
dc.identifier.issn1434-6028en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80822-
dc.description.abstractWe present a series of rigorous examples of the Kondo lattice model that exhibit full ferromagnetism in the ground state. The models are defined in one-, two- and three-dimensional lattices, and are characterized by a range of hopping terms, specific electron filling, and large ferromagnetic coupling. Our examples show that a sufficient strong but finite exchange coupling between conduction electrons and localized spins could overcome the competition from mobility of a finite density of electrons and drive the system from a paramagnetic phase to a ferromagnetic phase. We also establish a relation of ferromagnetism between the Hubbard model and Kondo lattice model. Meanwhile some rigorous results on ferromagnetism in the corresponding Hubbard model are presented.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://www.edpsciences.org/journal/index.cfm?edpsname=epjben_HK
dc.relation.ispartofEuropean Physical Journal Ben_HK
dc.subject75.10.Lp Band and itinerant modelsen_HK
dc.subject75.50.-y Studies of specific magnetic materialsen_HK
dc.titleFerromagnetic ground state in the Kondo lattice modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1434-6028&volume=2&spage=11&epage=16&date=1998&atitle=Ferromagnetic+Ground+State+in+the+Kondo+Lattice+Modelen_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0031649301en_HK
dc.identifier.hkuros31354en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031649301&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume2en_HK
dc.identifier.issue1en_HK
dc.identifier.spage11en_HK
dc.identifier.epage16en_HK
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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