Abstract
We investigate phonon modes of the rare-earth filled skutterudite compounds CeRu4sb12, CeOs4Sb12, PrRu 4sb12. These materials exhibit similar low-lying motions of filled ions inside the Sb cages that softens with decreasing temperature. Potentials at the rare-earth sites are considerably anharmonic. Despite that this behavior appears in all the four materials, magnitude of the softening of PrOs4Sb12 is largest among them. This fact implies that difference of carrier state gives rise to renormalization effect on the rare-earth-ion vibrations.
Original language | English |
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Article number | SA032 |
Journal | journal of the physical society of japan |
Volume | 80 |
Issue number | SUPPL. A |
DOIs | |
Publication status | Published - 2011 Jul |
Keywords
- Anharmonicity
- Cage structure
- Neutron scattering
- Phonon
ASJC Scopus subject areas
- Physics and Astronomy(all)