Published in
IOP Publishing, Journal of Physics: Conference Series, (273), p. 012023, 2011
DOI: 10.1088/1742-6596/273/1/012023
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Pu electronic structure and photoelectron spectroscopy
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Kevin S. Los Alamos National Laboratory Graham,
Eric D. Los Alamos National Laboratory Bauer,
David P. Los Alamos National Laboratory Moore,
Jeremy N. Los Alamos National Laboratory Mitchell,
John A. Los Alamos National Laboratory Kennison,
Richard L. Los Alamos National Laboratory Martin,
Lindsay E. Los Alamos National Laboratory Roy,
G. E. Rice Univ Scuseria
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Abstract
The electronic structure of PuCoGa{sub 5}, Pu metal, and PuO{sub 2} is explored using photoelectron spectroscopy. Ground state electronic properties are inferred from temperature dependent photoemission near the Fermi energy for Pu metal. Angle-resolved photoemission details the energy vs. crystaJ momentum landscape near the Fermi energy for PuCoGa{sub 5} which shows significant dispersion in the quasiparticle peak near the Fermi energy. For the Mott insulators AnO{sub 2}(An = U, Pu) the photoemission results are compared against hybrid functional calculations and the model prediction of a cross over from ionic to covalent bonding is found to be reasonable.