Evolution of charge order through the magnetic phase transition of LuFe2O4

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dc.contributor.authorBartkowiak, Men_AU
dc.contributor.authorMulders, AMen_AU
dc.contributor.authorScagnoli, Ven_AU
dc.contributor.authorStaub, Uen_AU
dc.contributor.authorPomjakushina, Een_AU
dc.contributor.authorConder, Ken_AU
dc.date.accessioned2014-04-16T00:28:45Zen_AU
dc.date.available2014-04-16T00:28:45Zen_AU
dc.date.issued2012-07-13en_AU
dc.date.statistics2014-04-16en_AU
dc.description.abstractThe charge order in multiferroic LuFe(2)O(4) has been investigated with resonant x-ray diffraction at the Fe K edge in the combined charge ordered and magnetic phase. The energy dependence of the charge order reflection (1/3 1/3 7/2) has been analyzed in detail to investigate the charge disproportionation between the iron sites as a function of temperature. It is found that the charge disproportionation is constant within 0.02e across the Neel temperature T(N). The charge order reflection exhibits a decrease in intensity with increasing temperature which is attributed to an increase in the probability of electron hopping. We confirm the increase in polarization at T(N) is not of static origin but rather dynamic. Our observations are consistent with antiferromagnetically aligned magnetic moments inhibiting the double exchange mechanism and reducing the probability of electrons hopping between Fe(2+) and Fe(3+) in the magnetic phase. © 2012, American Physical Society.en_AU
dc.identifier.articlenumber35121en_AU
dc.identifier.citationBartkowiak, M., Mulders, A. M., Scagnoli, V., Staub, U., Pomjakushina, E., & Conder, K. (2012). Evolution of charge order through the magnetic phase transition of LuFe2O4. Physical Review B, 86(3), Article Number 035121. doi:10.1103/PhysRevB.86.035121en_AU
dc.identifier.govdoc4642en_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.86.035121en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5437en_AU
dc.identifier.volume86en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectElectronsen_AU
dc.subjectSpinen_AU
dc.subjectMagnetismen_AU
dc.subjectAntiferromagnetismen_AU
dc.subjectPolarizationen_AU
dc.subjectElectron temperatureen_AU
dc.titleEvolution of charge order through the magnetic phase transition of LuFe2O4en_AU
dc.typeJournal Articleen_AU
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