| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-301 - C6-304 | |
| DOI | https://doi.org/10.1051/jphyscol:1981687 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-301-C6-304
DOI: 10.1051/jphyscol:1981687
1 Istituto di Fisica dell'Università, GNSM, Milano, Italy
2 Max-Planck Institut für Festkörperforschung, Stuttgart 80, F.R.G.
J. Phys. Colloques 42 (1981) C6-301-C6-304
DOI: 10.1051/jphyscol:1981687
TWO-PHONON PROGRESSIONS ASSOCIATED WITH VIBRONIC EXCITONS IN LAYERED 3d-METAL COMPOUNDS
G. Benedek1, I. Pollini1 et W. Bauhofer21 Istituto di Fisica dell'Università, GNSM, Milano, Italy
2 Max-Planck Institut für Festkörperforschung, Stuttgart 80, F.R.G.
Abstract
We have observed two-phonon structures in some intraconfigurationa1 crystal field transitions of V-, Mn- and Ni-halides. We also report for the first time the crystal field spectrum of CrBr2(3d4), where, despite its unfilled eg semishell, exciton-phonon (ep) interaction vanishes to first order yielding a two-phonon sequence in 3A1(G) + 3A2(F) band.