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Article: Spin and orbital physics in manganites

TitleSpin and orbital physics in manganites
Authors
Issue Date2001
PublisherWorld Scientific Publishing Co Pte Ltd. The Journal's web site is located at http://www.worldscinet.com/ijmpb/ijmpb.shtml
Citation
International Journal Of Modern Physics B, 2001, v. 15 n. 19-20, p. 2727-2745 How to Cite?
AbstractThe spin and orbital physics in perovskite manganites is briefly reviewed. Perovskite manganites are well known as the materials exhibiting colossal magnetoresistance (CMR), whose mechanism is based on the double exchange (DE) interaction, in which the electron hopping is connected with the spin configurations of the manganite ions. Recent intensive studies have shown that this DE framework must be subjected to the strong correlation between orbital degenerate electrons. On one hand, the orbital degeneracy itself leads to an anisotropic DE hopping being different from the conventional DE, which in turn may result in the anisotropy of the magnetic structure, such as the A-type or the C-type antiferromagnetism. On the other hand, the electronic correlation between these degenerate electrons plays an important role in determining the phases of the system. The correlation can come from both the on-site Coulomb interaction and the Jahn-Teller coupling between the lattice distortion and the electrons. The interplay of the DE mechanism and the strong electronic correlation leads to various magnetic, orbital and/or charge ordering as well as the phase separation.
Persistent Identifierhttp://hdl.handle.net/10722/80859
ISSN
2015 Impact Factor: 0.85
2015 SCImago Journal Rankings: 0.338
References

 

DC FieldValueLanguage
dc.contributor.authorGu, RYen_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2010-09-06T08:11:03Z-
dc.date.available2010-09-06T08:11:03Z-
dc.date.issued2001en_HK
dc.identifier.citationInternational Journal Of Modern Physics B, 2001, v. 15 n. 19-20, p. 2727-2745en_HK
dc.identifier.issn0217-9792en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80859-
dc.description.abstractThe spin and orbital physics in perovskite manganites is briefly reviewed. Perovskite manganites are well known as the materials exhibiting colossal magnetoresistance (CMR), whose mechanism is based on the double exchange (DE) interaction, in which the electron hopping is connected with the spin configurations of the manganite ions. Recent intensive studies have shown that this DE framework must be subjected to the strong correlation between orbital degenerate electrons. On one hand, the orbital degeneracy itself leads to an anisotropic DE hopping being different from the conventional DE, which in turn may result in the anisotropy of the magnetic structure, such as the A-type or the C-type antiferromagnetism. On the other hand, the electronic correlation between these degenerate electrons plays an important role in determining the phases of the system. The correlation can come from both the on-site Coulomb interaction and the Jahn-Teller coupling between the lattice distortion and the electrons. The interplay of the DE mechanism and the strong electronic correlation leads to various magnetic, orbital and/or charge ordering as well as the phase separation.en_HK
dc.languageengen_HK
dc.publisherWorld Scientific Publishing Co Pte Ltd. The Journal's web site is located at http://www.worldscinet.com/ijmpb/ijmpb.shtmlen_HK
dc.relation.ispartofInternational Journal of Modern Physics Ben_HK
dc.titleSpin and orbital physics in manganitesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0217-9792&volume=15&spage=2727&epage=2745&date=2001&atitle=Spin+and+orbital+physics+in+manganitesen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0035839319en_HK
dc.identifier.hkuros65713en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035839319&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue19-20en_HK
dc.identifier.spage2727en_HK
dc.identifier.epage2745en_HK
dc.publisher.placeSingaporeen_HK
dc.identifier.scopusauthoridGu, RY=7102993987en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK

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