| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-703 - C8-704 | |
| DOI | https://doi.org/10.1051/jphyscol:19888318 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-703-C8-704
DOI: 10.1051/jphyscol:19888318
Department of Physics, Tohoku University, Sendai, 980 Japan
J. Phys. Colloques 49 (1988) C8-703-C8-704
DOI: 10.1051/jphyscol:19888318
DYNAMICS OF VALENCE-FLUCTUATING Tm IMPURITIES
T. SasoDepartment of Physics, Tohoku University, Sendai, 980 Japan
Abstract
A new formalism is presented for describing valence fluctuating Tm impurities. Starting from the selfconsistent perturbation scheme valid at arbitrary temperatures, the present formalism incorporates not only the valence fluctuation between 4f12and 4f13, but also the coupled 4f13 and a conduction electron scattering channel through T-matrix, the latter yielding a singlet ground state at low temperatures. Contribution of this channel to the f-electron spectral function is also discussed.