Abstract
The Anderson Hamiltonian, with spin-orbit and cubic crystal-field splittings, is studied using Brillouin-Wigner perturbation theory. The ratio between the low temperature paramagnetic susceptibility and the electronic specific heat coefficient is reported for both intermediate valent and Kondo regimes. We find that finite spin-orbit effect is not negligible in Ce systems in the intermediate valent regime. In the nearly integral valent case, for small Kondo temperatureT K, we also find that even for relatively large crystalfield splitting (∼10T K), if the free ion ground state is of Γ7 symmetry, the effect of the Γ8 level is still large.
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Razafimandimby, H.A. Low temperature properties of valence fluctuating cerium impurity with spin-orbit and crystal field splittings. Z. Physik B - Condensed Matter 59, 21–26 (1985). https://doi.org/10.1007/BF01325378
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DOI: https://doi.org/10.1007/BF01325378