Dynamics of singlet-triplet crystalline electric field levels in Pr skutterudites

Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto

Research output: Contribution to journalArticle

Abstract

Dynamics of 4f2 electrons with the singlet-triplet crystalline electric field (CEF) levels in Pr skutterudites is studied by taking account of hybridization with conduction electrons. Dynamical properties are numerically derived with use of the non-crossing approximation (NCA). The effective exchange interaction depends much on the nature of the CEF triplet wave functions. Although the CEF singlet is eventually formed at low temperatures, Kondo effect is seen at temperatures higher than the CEF splitting. The crossover from the Kondo-like behavior to the CEF singlet-like one is explicitly shown in the electrical resistivity and magnetic intensity.

Original languageEnglish
Pages (from-to)244-245
Number of pages2
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - May 1 2006
Externally publishedYes

Keywords

  • Crystalline electric field
  • Kondo effect
  • Non-crossing approximation
  • Skutterudite

ASJC Scopus subject areas

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

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