File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Effective Hamiltonian for an extended Kondo-lattice model and a possible origin of charge ordering in half-doped manganites

TitleEffective Hamiltonian for an extended Kondo-lattice model and a possible origin of charge ordering in half-doped manganites
Authors
KeywordsPhysics
Issue Date1999
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 1999, v. 59 n. 22, p. 14484-14488 How to Cite?
AbstractAn effective Hamiltonian is derived in the case of the strong Hund coupling and on-site Coulomb interaction by means of a projective perturbation approach. A physical mechanism for charge ordering in half-doped manganites (R 0.5X 0.5MnO 3) is proposed. The virtual process of electron hopping results in antiferromagnetic superexchange and a repulsive interaction, which may drive electrons to form a Wigner lattice. The phase diagram of the ground state of the model is presented at half doping. In the case of formation of a Wigner lattice, we prove that spins of electrons are aligned ferromagnetically as well as that the localized spin background is antiferromagnetic. The influence of the on-site Coulomb interaction is also discussed. © 1999 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/43265
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorShen, SQen_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2007-03-23T04:42:28Z-
dc.date.available2007-03-23T04:42:28Z-
dc.date.issued1999en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 1999, v. 59 n. 22, p. 14484-14488en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43265-
dc.description.abstractAn effective Hamiltonian is derived in the case of the strong Hund coupling and on-site Coulomb interaction by means of a projective perturbation approach. A physical mechanism for charge ordering in half-doped manganites (R 0.5X 0.5MnO 3) is proposed. The virtual process of electron hopping results in antiferromagnetic superexchange and a repulsive interaction, which may drive electrons to form a Wigner lattice. The phase diagram of the ground state of the model is presented at half doping. In the case of formation of a Wigner lattice, we prove that spins of electrons are aligned ferromagnetically as well as that the localized spin background is antiferromagnetic. The influence of the on-site Coulomb interaction is also discussed. © 1999 The American Physical Society.en_HK
dc.format.extent117296 bytes-
dc.format.extent45056 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.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleEffective Hamiltonian for an extended Kondo-lattice model and a possible origin of charge ordering in half-doped manganitesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=59&issue=22&spage=14484&epage=14488&date=1999&atitle=Effective+Hamiltonian+for+an+extended+Kondo-lattice+model+and+a+possible+origin+of+charge+ordering+in+half-doped+manganitesen_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.59.14484en_HK
dc.identifier.scopuseid_2-s2.0-0000157440en_HK
dc.identifier.hkuros40785-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000157440&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume59en_HK
dc.identifier.issue22en_HK
dc.identifier.spage14484en_HK
dc.identifier.epage14488en_HK
dc.identifier.isiWOS:000080780700042-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats