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Article: Hole dispersions in the G- and C-type orbital ordering backgrounds: Doped manganese oxides

TitleHole dispersions in the G- and C-type orbital ordering backgrounds: Doped manganese oxides
Authors
KeywordsPhysics
Issue Date2000
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2000, v. 62 n. 6, p. 3869-3874 How to Cite?
AbstractIn the framework of the linear spin-wave theory and orbital-charge separation, we calculate quasiparticle (QP) dispersions for two different antiferromagnetic orbital structures in the fully saturated spin phase of manganese oxides. Although with the same orbital wave excitations, the QP bands of C- and G-type orbital structures exhibit completely different shapes. The pseudogap observed in the density of states and spectral functions around ω=0 is related with the large antiferromagnetic orbital fluctuation. The minimal band energy for G-type is lower than that for C-type orbital order, while these band curves almost coincide in some momentum points. Larger energy splitting occurs between the two branches of k z=0 and k z=π when increasing the superexchange coupling J, suggesting that the orbital scattering plays an essential role in the QP dispersions. ©2000 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/43304
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFan, XJen_HK
dc.contributor.authorShen, SQen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorLi, XGen_HK
dc.contributor.authorWang, QHen_HK
dc.date.accessioned2007-03-23T04:43:13Z-
dc.date.available2007-03-23T04:43:13Z-
dc.date.issued2000en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2000, v. 62 n. 6, p. 3869-3874en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43304-
dc.description.abstractIn the framework of the linear spin-wave theory and orbital-charge separation, we calculate quasiparticle (QP) dispersions for two different antiferromagnetic orbital structures in the fully saturated spin phase of manganese oxides. Although with the same orbital wave excitations, the QP bands of C- and G-type orbital structures exhibit completely different shapes. The pseudogap observed in the density of states and spectral functions around ω=0 is related with the large antiferromagnetic orbital fluctuation. The minimal band energy for G-type is lower than that for C-type orbital order, while these band curves almost coincide in some momentum points. Larger energy splitting occurs between the two branches of k z=0 and k z=π when increasing the superexchange coupling J, suggesting that the orbital scattering plays an essential role in the QP dispersions. ©2000 The American Physical Society.en_HK
dc.format.extent94900 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleHole dispersions in the G- and C-type orbital ordering backgrounds: Doped manganese oxidesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=62&issue=6&spage=3869&epage=3874&date=2000&atitle=Hole+dispersions+in+the+G-+and+C-type+orbital+ordering+backgrounds:+Doped+manganese+oxidesen_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.62.3869en_HK
dc.identifier.scopuseid_2-s2.0-0005894524en_HK
dc.identifier.hkuros55923-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0005894524&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume62en_HK
dc.identifier.issue6en_HK
dc.identifier.spage3869en_HK
dc.identifier.epage3874en_HK
dc.identifier.isiWOS:000088727900042-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridFan, XJ=7403393966en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.scopusauthoridLi, XG=8093673500en_HK
dc.identifier.scopusauthoridWang, QH=7406916485en_HK

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