Doping and temperature dependence of Mn 3d states in A-site ordered manganites

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dc.contributor.authorGarcía-Fernández, Men_AU
dc.contributor.authorStaub, Uen_AU
dc.contributor.authorBodenthin, Yen_AU
dc.contributor.authorPomjakushin, Ven_AU
dc.contributor.authorMirone, Aen_AU
dc.contributor.authorFernández-Rodríguez, Jen_AU
dc.contributor.authorScagnoli, Ven_AU
dc.contributor.authorMulders, AMen_AU
dc.contributor.authorLawrence, SMen_AU
dc.contributor.authorPomjakushina, Een_AU
dc.date.accessioned2011-03-18T00:36:01Zen_AU
dc.date.available2011-03-18T00:36:01Zen_AU
dc.date.issued2010-12-06en_AU
dc.date.statistics2010-12-06en_AU
dc.description.abstractWe present a systematic study of the electronic structure in A-site ordered manganites as function of doping and temperature. The energy dependencies observed with soft x-ray resonant diffraction (SXRD) at the Mn L2,3 edges are compared with structural investigations using neutron powder diffraction as well as with cluster calculations. The crystal structures obtained with neutron powder diffraction reflect the various orbital and charge ordered phases, and show an increase in the Mn-O-Mn bond angle as function of doping and temperature. Cluster calculations show that the observed spectral changes in SXRD as a function of doping are more pronounced than expected from an increase in bandwitdh due to the increase in Mn-O-Mn bond angle and are best described by holes that are distributed at the neighboring oxygen ions. These holes are not directly added to the Mn 3d shell but centered at the Mn site. In contrast, the spectral changes in SXRD as function of temperature are best described by an increase of magnetic correlations. This demonstrates the strong correlations between orbitals and magnetic moments of the 3d states. © 2010, American Physical Societyen_AU
dc.identifier.articlenumber235108en_AU
dc.identifier.citationGarcía-Fernández, M., Staub, U., Bodenthin, Y., Pomjakushin, V., Mirone, A., Fernández-Rodríguez, J., Scagnoli, V., Mulders, A. M., Lawrence, S. M., & Pomjakushina, E. (2010). Doping and temperature dependence of Mn 3d states in A-site ordered manganites. Physical Review B, 82(23), 235108. doi:10.1103/PhysRevB.82.235108en_AU
dc.identifier.govdoc3315en_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.issue23en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.82.235108en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3142en_AU
dc.identifier.volume82en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectCrystal structureen_AU
dc.subjectCrystal dopingen_AU
dc.subjectOxygen ionsen_AU
dc.subjectTemperature rangeen_AU
dc.subjectMagnetic momentsen_AU
dc.titleDoping and temperature dependence of Mn 3d states in A-site ordered manganitesen_AU
dc.typeJournal Articleen_AU
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