Abstract
X-ray absorption near edge structure (XANES) measurements at the Pr L1-edge of PrNiO3 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 RNiO3 (R being a rare earth atom).
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Mustre de León, J., Acosta-Alejandro, M., Medarde, M. et al. X-ray Absorption at the Pr L1-edge in PrNiO3 . J Supercond Nov Magn 22, 81–84 (2009). https://doi.org/10.1007/s10948-008-0369-1
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DOI: https://doi.org/10.1007/s10948-008-0369-1