Lattice dynamics of the filled skutterudite CeOs4Sb12

C. P. Yang, H. Wang, K. Iwasa, M. Kohgi, H. Sugawara, H. Sato

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8 Citations (Scopus)

Abstract

Inelastic neutron scattering was performed on both poly- and single-crystalline samples to study the lattice dynamics of the Ce-filled antimonide skutterudite. For powder samples, no well-defined extra phonon excitation peak, which was reported to indicate a local Einstein oscillating mode, was detected in the low-energy region of the vibrational density of states within the experimental accuracy. However, a coherent phonon was clearly observed in single crystals at different temperatures. The dispersion curves were measured along two symmetry axes[0 1 1] and [1 0 0] at room temperature and compared with theoretical calculation by Feldman [Phys. Rev. B 73, 014306 (2006)] using the model of local density approximation.

Original languageEnglish
Article number102503
JournalApplied Physics Letters
Volume90
Issue number10
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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