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|Author(s):||J F. Herbst; R E. Watson;|
|Title:||5f-Electron Excitation Energies and the Coulomb Term, U, in the Light Actinide Metals|
|Published:||June 02, 1975|
|Abstract:||Relativistic Hartree-Fock-Wigner-Seitz band calculations have been performed for the actinide metals Ac through Am in order to estimate 5f excitation energies. Our calculations predict that the tetravalent state (i.e., four s-d conduction electrons) is favored for the lighter elements with a crossover to a trivalent ground state occurring near uranium. We find the Coulomb energy, U, for 5f electron hopping to increase from 2-3 eV at Th to 4-5 eV at Am.|
|Citation:||Physical Review B (Condensed Matter and Materials Physics)|
|Pages:||pp. 1395 - 1398|
|Research Areas:||Condensed Matter Physics|