Neutron spectroscopy on ErFeO3 maps dispersive Fe spin waves and Er crystal-field levels, attributing the latter's dispersion to Er-Er exchange and splitting to Er-Fe coupling, thereby establishing a hierarchy of magnetic interaction strengths.
The interaction between Er- and Fe-sublattices should result in hybridization of the CEF and magnon excita- 8 tions and potentially anticrossing
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Magnetic excitation spectrum and hierarchy of magnetic interactions in ErFeO3
Neutron spectroscopy on ErFeO3 maps dispersive Fe spin waves and Er crystal-field levels, attributing the latter's dispersion to Er-Er exchange and splitting to Er-Fe coupling, thereby establishing a hierarchy of magnetic interaction strengths.