X-ray Absorption at the Pr L1-edge in PrNiO3

X-ray absorption near edge structure (XANES) measurements at the Pr  L 1-edge of PrNiO 3 exhibit a change across the metal insulator transition. This structural change is consistent with the observation of a lattice distortion, inferred from the Ni K -edge XANES spectra. Theoretical calculations of...

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Bibliographic Details
Published inJournal of superconductivity and novel magnetism Vol. 22; no. 1; pp. 81 - 84
Main Authors Mustre de León, J., Acosta-Alejandro, M., Medarde, M., Montano, P. A.
Format Journal Article
LanguageEnglish
Published Boston Springer US 2009
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
Metal-insulator transition
XANES
Microstrain
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Summary:X-ray absorption near edge structure (XANES) measurements at the Pr  L 1-edge of PrNiO 3 exhibit a change across the metal insulator transition. This structural change is consistent with the observation of a lattice distortion, inferred from the Ni K -edge XANES spectra. Theoretical calculations of the XANES show that the observed features of the spectra are consistent with the orthorhombic structure in the metallic phase and a monoclinic structure in the insulating phase. The presence of such distortion provides a unified view of the structural change concurrent with the metal-insulator transition in the whole family RNiO 3 (R being a rare earth atom).
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ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-008-0369-1