Investigation of the anharmonic guest modes in filled skutterudites using inelastic X-ray scattering techniques

Satoshi Tsutsui, Hisao Kobayashi, John P. Sutter, Hiroshi Uchiyama, Alfred Q.R. Baron, Yoshitaka Yoda, Daisuke Kikuchi, Hitoshi Sugawara, Chihiro Sekine, Ichimin Shirotani, Akira Ochiai, Hideyuki Sato

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We have carried out high-resolution inelastic X-ray scattering and 149Sm nuclear resonant inelastic scattering to investigate the anharmonicity of the mode of the atoms enclosed in the cages of filled skutterudites. The temperature dependence of the phonon energy obtained by 149Sm nuclear resonant inelastic scattering from SmRu 4P12 suggests an anharmonic vibration of the Sm atoms. A similar decrease of the vibration energy of the La atoms in LsOs 4Sb12 with decreasing temperature, which suggests that this motion too is anharmonic, was observed by high resolution inelastic X-ray scattering.

Original languageEnglish
Pages (from-to)257-259
Number of pages3
Journaljournal of the physical society of japan
Volume77
Issue numberSUPPL.A
DOIs
Publication statusPublished - 2008 Jan 1

Keywords

  • Filled skutterudite
  • Guest modes
  • Inelastic X-ray scattering
  • Nuclear resonant inelastic scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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