scholarly journals Electronic Structure, Localization and 5f Occupancy in Pu Materials

2012 ◽  
Vol 1444 ◽  
Author(s):  
Miles F. Beaux ◽  
John J. Joyce ◽  
Tomasz Durakiewicz ◽  
Kevin S. Graham ◽  
Eric D. Bauer ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Fermi Energy ◽  
Photoelectron Spectroscopy ◽  
Electronic Configuration ◽  
Multiplet Structure ◽  
Temperature Dependent ◽  
Small Component ◽  
Narrow Peak ◽  
Valence Electronic Structure

ABSTRACTThe 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 5f6 configuration. PES results for PuTe are used as an indication for the 5f6 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 5f5 with some admixture of 5f6 as well as a localized/delocalized 5f5 description.

scholarly journals UV Photoelectron Spectroscopy and Outer Valence Electronic Structure of Dihalobenzenes

2014 ◽  
Vol 87 (4) ◽  
pp. 495-499
Author(s):  
Igor Novak ◽  
Leo Klasinc ◽  
Boris Šket ◽  
Delano P. Chong ◽  
Sean P. McGlynn
Keyword(s):  
Electronic Structure ◽  
Photoelectron Spectroscopy ◽  
Uv Photoelectron Spectroscopy ◽  
Outer Valence ◽  
Valence Electronic Structure

Electronic Structure of δ-Pu and PuCoGa5 from Photoemission and the Mixed Level Model

2003 ◽  
Vol 802 ◽  
Author(s):  
John J. Joyce ◽  
John M. Wills ◽  
Tomasz Durakiewicz ◽  
Elzbieta Guziewicz ◽  
Martin T. Butterfield ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Fermi Level ◽  
Electronic Properties ◽  
Excellent Agreement ◽  
Fermi Energy ◽  
Photoelectron Spectroscopy ◽  
Spectral Intensity ◽  
Δ Phase ◽  
Level Model ◽  
Photoemission Data

ABSTRACTThe electronic structure of δ-phase Pu metal and the Pu-based superconductor PuCoGa5 is explored using photoelectron spectroscopy and a novel theoretical scheme. Excellent agreement between calculation and experiment defines a path forward for understanding electronic structure aspects of Pu-based materials. The photoemission results show two separate regions of 5f electron spectral intensity, one at the Fermi energy and another centered 1.2 eV below the Fermi level. A comparison is made between the photoemission data and five computational schemes for δ-Pu. The results for δ-Pu and PuCoGa5 indicate 5f electron behavior on the threshold between localized and itinerant and a broader framework for understanding the fundamental electronic properties of the Pu 5f levels in general within two configurations, one localized and one itinerant.

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