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Electronic Structure, Localization and 5f Occupancy in Pu Materials

Published online by Cambridge University Press:  13 June 2012

Miles F. Beaux II,
John J. Joyce,
Tomasz Durakiewicz,
Kevin S. Graham,
Eric D. Bauer,
Jeremy N. Mitchell,
Paul H. Tobash and
Scott Richmond
Scott Richmond
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A.
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Abstract

The electronic structure of delta plutonium (δ-Pu) and plutonium compounds is investigated using photoelectron spectroscopy (PES). Results for δ-Pu show a small component of the valence electronic structure which might reasonably be associated with a 5f 6 configuration. PES results for PuTe are used as an indication for the 5f 6 configuration due to the presence of atomic multiplet structure. Temperature dependent PES data on δ-Pu indicate a narrow peak centered 20 meV below the Fermi energy and 100 meV wide. The first PES data for PuCoIn5 indicate a 5f electronic structure more localized than the 5fs in the closely related PuCoGa5. There is support from the PES data for a description of Pu materials with an electronic configuration of 5f 5 with some admixture of 5f 6 as well as a localized/delocalized 5f 5 description.

Keywords

actinidephotoemissionPu

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1444: Symposium S/Y – Actinides and Nuclear Energy Materials , 2012, mrss12-1444-y04-07
Copyright
Copyright © Materials Research Society 2012

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