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dc.contributor.authorAcosta-Alejandro, M.
dc.contributor.authorMustre de León, J.
dc.contributor.authorMedarde, M.
dc.contributor.authorLacorre, P. H.
dc.contributor.authorKonder, K.
dc.contributor.authorMontano, P. A.
dc.date.accessioned2008-09-04T12:44:24Z
dc.date.available2008-09-04T12:44:24Z
dc.date.issued2008-02
dc.identifier.bibliographicCitationAcosta-Alejandro, M., J. M. de Leon, M. Medarde, P. Lacorre, K. Konder, and P. A. Montano, 2008, Local lattice structure change in PrNiO3 across the metal-insulator transition: X-ray absorption near-edge structure spectroscopy and ab initio calculations: Physical Review B, v. 77, no. 8. http://link.aps.org.proxy.cc.uic.edu/abstract/PRB/v77/e085107en
dc.identifier.issn1098-0121
dc.identifier.otherdoi:10.1103/PhysRevB.77.085107
dc.identifier.urihttp://hdl.handle.net/10027/2160
dc.descriptionCopyright:http://forms.aps.org/author/copytrnsfr.pdfen
dc.description.abstractX-ray absorption near edge structure (XANES) measurements at the Ni K edge of PrNiO3 across the metal insulator transition show that a change in the local lattice structure accompanies such transition. Theoretical calculations of the XANES show that the observed features of the spectra are consistent with the orthorhombic structure, reported by neutron diffraction, in the metallic phase. However, for the insulating phase, a change in the local symmetry, consistent with a monoclinic structure, is required to reproduce the spectra. This local symmetry change yields to two nickel sites with different local environment and implies a strong electron-lattice interaction at the local level. This claim is also supported by the observation of a O-16-O-18 isotopic shift in the temperature at which the XANES exhibits the change attributed to the switching of the local symmetry from orthorhombic to monoclinic.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.subjectrnio3 perovskiteen
dc.subjectcharge disproportionateen
dc.titleLocal lattice structure change in PrNiO3 across the metal-insulator transition: X-ray absorption near-edge structure spectroscopy and ab initio calculationsen
dc.typeArticleen


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