Publication at Faculty of Mathematics and Physics |
2009
Abstract
Analysis of available photoelectron spectra from Pu compounds indicates the presence of the 5f 5 multiplet, which dominates the energy scale close to the Fermi level. As shown by the LDA U Hubbard I calculations, its intensity scales with the admixture of the 5f 6 manifold in the 5f 5 ground state, which can lead to an average occupancy substantially exceeding 5.0.
This admixture also leads to the suppression of magnetic order and occurrence of heavy fermion behaviour.