| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-713 - C8-714 | |
| DOI | https://doi.org/10.1051/jphyscol:19888323 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-713-C8-714
DOI: 10.1051/jphyscol:19888323
Department of Theoretical Physics, Oxford University, Oxford OX1 3NP, G.B.
J. Phys. Colloques 49 (1988) C8-713-C8-714
DOI: 10.1051/jphyscol:19888323
THE SUSCEPTIBILITY OF MIXED VALENT Tm AND U IONS
S. M. M. Evans et G. A. GehringDepartment of Theoretical Physics, Oxford University, Oxford OX1 3NP, G.B.
Abstract
Using a variational technique we calculate the susceptibility of an ion fluctuating between two magnetic valence states. We show the importance of including the first excited state. Our results can be expressed in a renormalised form in the Kondo limits and are seen to correspond to exact results for Ce.