Lattice dynamics and the interaction with the crystal electric field in NdCu2
| Autor: | K Hense, A Hoser, H. Nowotny, E. Gratz |
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| Rok vydání: | 2004 |
| Předmět: |
Lattice dynamics
Condensed matter physics Phonon Chemistry Inelastic scattering Condensed Matter Physics Inelastic neutron scattering Brillouin zone Crystal Condensed Matter::Materials Science Condensed Matter::Superconductivity Electric field Dispersion relation Condensed Matter::Strongly Correlated Electrons General Materials Science |
| Zdroj: | Journal of Physics: Condensed Matter. 16:5751-5768 |
| ISSN: | 1361-648X 0953-8984 |
| DOI: | 10.1088/0953-8984/16/32/012 |
| Popis: | The lattice dynamics of NdCu2 has been investigated with inelastic neutron scattering measurements. An uniaxial Born–von Karman model has been used to calculate the phonon dispersion relation. A verification of a phonon–crystal electric field (CEF) interaction was found from temperature dependent measurements of phonons and CEF excitations. The impact of the phonon–CEF interaction was found to be strongest at the Brillouin zone centre among the 7.5 meV Ag-phonon mode and the e4 CEF level. This has been verified with theoretical model calculations. |
| Databáze: | OpenAIRE |
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