Abstract
The lattice dynamics of NdCu2 has been investigated with inelastic neutron scattering measurements. An uniaxial Born–vonKarman model has been used to calculate the phonon dispersion relation. A verification ofa phonon–crystal electric field (CEF) interaction was found from temperature dependentmeasurements of phonons and CEF excitations. The impact of the phonon–CEFinteraction was found to be strongest at the Brillouin zone centre among the 7.5 meVAg-phononmode and the ε4 CEF level. This has been verified with theoretical model calculations.
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