| Electronic Structure of Doped La-Mn-O Perovskites |
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M. Demetera, M. Neumanna, V.R. Galakhovb, N.A. Ovechkinab, E.Z. Kurmaevb and N.I. Labachevskayac aUniversity of Osnabrück, Faculty of Physics Barbarastr. 7, 49069 Osnabrück, Germany bInstitute of Metal Physics, Russian Academy of Sciences - Ural Division 620219 Yekaterinburg GSP-170, Russia cInstitute of Chemistry of Solids, Russian Academy of Sciences - Ural Division 620219 Yekaterinburg GSP-145, Russia |
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| The electronic structure of the doped perovskite manganese oxides La1-xSrxMnO3 and La1-xBaxMnO3 has been investigated by X-ray photoelectron and X-ray emission spectroscopy. By comparing the O Kα and Mn Lα X-ray emission spectra with the valence band X-ray photoelectron spectra we could localize the Mn 3d and O 2p states into the valence band. Our data are compared with previous band structure calculations. The value of the Mn 3s splitting does not change with Sr-doping in the concentration region from x=0.0 till x=0.3. This shows that the doping holes have mainly oxygen p character. The large value of the splitting indicates that the 3d electrons are in the high-spin state. |
| DOI: 10.12693/APhysPolA.98.587 PACS numbers: 71.70.Gm, 79.70.+q |