Electronic structure and non-magnetic character of δ-Pu-Am alloys

Abstract

The around-mean-field LSDA+U correlated band theory is applied to investigate the electronic and magnetic structure of fcc-Pu-Am alloys. Despite a lattice expansion caused by the Am atoms, neither tendency to 5f localization nor formation of local magnetic moments on Pu atoms in Pu-Am alloys are found. The 5f-manifolds in the alloys are calculated being very similar to a simple weighted superposition of elemental Pu and Am 5f-states.

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