Title: Influence of Static Jahn-Teller Distortion on the Magnetic Excitation Spectrum of PrO2 - A Synchrotron X-ray and Neutron Inelastic Scattering Study
Authors: WEBSTER C. H.HELME L. M.BOOTHROYD A. T.MC MORROW D. F.WILKINS S. B.DETLEFS C.DETLEFS BlankaBEWLEY R. I.MC KELVY M. J.
Citation: PHYSICAL REVIEW B vol. 76 p. 134419-1 134419-6
Publisher: AMERICAN PHYSICAL SOC
Publication Year: 2007
JRC N°: JRC41237
ISSN: 1098-0121
URI: http://dx.doi.org/10.1103/PhysRevB.76.134419
http://publications.jrc.ec.europa.eu/repository/handle/JRC41237
DOI: 10.1103/PhysRevB.76.134419
Type: Articles in periodicals and books
Abstract: A synchrotron x-ray diffraction study of the crystallographic structure of PrO2 in the Jahn-Teller distorted phase is reported. The distortion of the oxygen sublattice, which was previously ambiguous, is shown to be a chiral structure in which neighboring oxygen chains have opposite chiralities. A temperature dependent study of the magnetic excitation spectrum, probed by neutron inelastic scattering, is also reported. Changes in the energies and relative intensities of the crystal field transitions provide an insight into the interplay between the static and dynamic Jahn-Teller effects.
JRC Directorate:Nuclear Safety and Security

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