Influence of static Jahn-Teller distortion on the magnetic excitation spectrum of PrO2: A synchrotron x-ray and neutron inelastic scattering study

Webster, C.H., Helme, L.M., Boothroyd, A.T., McMorrow, D.F., Wilkins, S.B., Detlefs, C., Detlefs, B., Bewley, R.I. and McKelvy, M.J. (2007) Influence of static Jahn-Teller distortion on the magnetic excitation spectrum of PrO2: A synchrotron x-ray and neutron inelastic scattering study. Physical Review B, 76(13), 134419. (doi:10.1103/PhysRevB.76.134419)

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Abstract

A synchrotron x-ray diffraction study of the crystallographic structure of Pr O 2 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.

Item Type:Articles
Keywords:PrO2, dynamic Jahn-Teller effect.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Webster, Dr Carol
Authors: Webster, C.H., Helme, L.M., Boothroyd, A.T., McMorrow, D.F., Wilkins, S.B., Detlefs, C., Detlefs, B., Bewley, R.I., and McKelvy, M.J.
College/School:College of Science and Engineering > School of Computing Science
Journal Name:Physical Review B
Publisher:American Physical Society
ISSN:1098-0121
ISSN (Online):1550-235X
Published Online:24 October 2007

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