INDIGO Home University of Illinois at Urbana-Champaign logo uic building uic pavilion uic student center

Local lattice structure change in PrNiO3 across the metal-insulator transition: X-ray absorption near-edge structure spectroscopy and ab initio calculations

Show simple item record

Bookmark or cite this item: http://hdl.handle.net/10027/2160

Files in this item

File Description Format
PDF lattice.pdf (157KB) (no description provided) PDF
Title: Local lattice structure change in PrNiO3 across the metal-insulator transition: X-ray absorption near-edge structure spectroscopy and ab initio calculations
Author(s): Acosta-Alejandro, M.; Mustre de León, J.; Medarde, M.; Lacorre, P. H.; Konder, K.; Montano, P. A.
Subject(s): rnio3 perovskite charge disproportionate
Abstract: X-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.
Issue Date: 2008-02
Publisher: American Physical Society
Citation Info: Acosta-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/e085107
Type: Article
Description: Copyright:http://forms.aps.org/author/copytrnsfr.pdf
URI: http://hdl.handle.net/10027/2160
ISSN: 1098-0121
Date Available in INDIGO: 2008-09-04
 

This item appears in the following Collection(s)

Show simple item record

Statistics

Country Code Views
United States of America 169
China 31
Germany 14
United Kingdom 9
Australia 4

Browse

My Account

Information

Access Key