Non-magnetic-doublet ground state in PrInCu2; Enhancement of the specific-heat coefficient at low temperatures

Tsuyoshi Ikeno, Yosikazu Isikawa, Tomohiko Kuwai, Akihiro Mitsuda, Toshio Mizushima

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7 Citations (Scopus)

Abstract

Specific heat, C, thermoelectric power, S, and magnetic susceptibility, χ, of a cubic Heusler compound PrInCu2 have been carefully examined. The C / T shows an enhancement with decreasing T and reaches 1.1 J / mol K2 at 0.5 K, while the S / T does not show any enhancement at temperatures below 1 K. These observations suggest that the conduction electrons at EF do not correlate with the 4f electrons of Pr atoms and that the enhancement of C / T is not due to the Kondo effect. To explain the enhancement of the C / T at low temperatures, a model that the non-magnetic doublet of PrInCu2 is lifted by quadrupole fluctuations was proposed. From the analysis of overall features of C ( T ) and χ ( T ), the energy scheme of 4f electrons was derived.

Original languageEnglish
Pages (from-to)677-678
Number of pages2
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - May 1 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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