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Multiplet Effects in the Quasiparticle Band Structure of the $f^1-f^2$ Anderson Model

B. R. Trees·A. J. Fedro·M. R. Norman
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Abstract

In this paper, we examine the mean field electronic structure of the $f^1-f^2$ Anderson lattice model in a slave boson approximation, which should be useful in understanding the physics of correlated metals with more than one f electron per site such as uranium-based heavy fermion superconductors. We find that the multiplet structure of the $f^2$ ion acts to quench the crystal field splitting in the quasiparticle electronic structure. This is consistent with experimental observations in such metals as $UPt_3$.

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B. R. Trees, A. J. Fedro, M. R. Norman. 1994-11-21. Multiplet Effects in the Quasiparticle Band Structure of the $f^1-f^2$ Anderson Model. https://doi.org/10.1103/physrevb.51.6167

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