Mixed-configuration ground state for intermediate-valence Sm compounds
- 15 April 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 13 (8) , 3506-3510
- https://doi.org/10.1103/physrevb.13.3506
Abstract
As a model for the electronic properties of Sm compounds and alloys showing configuration mixing we study the two-band Hubbard Hamiltonian generalized to include the interatomic Coulomb mechanism for configuration mixing suggested by Kaplan and Mahanti. This model can exhibit a localized mixed-configuration ground state as indicated by experiments on some alloys. The stability of this state against delocalization of the electrons is studied as a function of the parameters of the model.Keywords
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