Anomalous field-insensitive heavy-fermion state in SmOs4Sb12

Y. Aoki, S. Sanada, H. Aoki, D. Kikuchi, H. Sugawara, H. Sato

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Extraordinary field-insensitive heavy-fermion (HF) state has been recently discovered in the filled-skutterudite SmOs4Sb12. Thermodynamic analysis indicates that weak temperature dependence of magnetization reflects the field insensitiveness of the HF state. The observed magnetic anisotropy is qualitatively consistent with a quartet crystalline-electric-field (CEF) ground state of Sm ions. Largely suppressed magnetization suggests screening of Sm magnetic moments taking place in the HF state.

Original languageEnglish
Pages (from-to)54-55
Number of pages2
JournalPhysica B: Condensed Matter
Issue numberSPEC. ISS.
Publication statusPublished - 2006 May 1
Externally publishedYes


  • Filled skutterudite
  • Heavy fermion
  • Kadowaki-Woods relation
  • SmOsSb

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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