Magneto-vibrational excitations in PrAl2
- 1 April 1981
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 11 (4), 905-913
- https://doi.org/10.1088/0305-4608/11/4/019
Abstract
The equation of motion method for the Green function is developed to describe collective excitations in the model of metallic rare-earth compounds taking into account the magneto-elastic interaction. Cubic compounds with a non-magnetic crystal-field ground state are investigated. A comparison with inelastic neutron scattering results for PrAl2 in the ferromagnetic phase shows excellent agreement between the calculated coupled magneto-vibrational modes and the experimental spectrum. In the paramagnetic phase hybridised quadrupole-type exciton-phonon excitations can appear.Keywords
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