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

Research output: Contribution to journalArticle

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

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Ground state
Specific heat
specific heat
ground state
Electrons
augmentation
coefficients
magnetic permeability
Kondo effect
Thermoelectric power
Magnetic susceptibility
Temperature
conduction electrons
Atoms
electrons
quadrupoles
atoms
temperature
energy

All Science Journal Classification (ASJC) codes

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

Cite this

Non-magnetic-doublet ground state in PrInCu2; Enhancement of the specific-heat coefficient at low temperatures. / Ikeno, Tsuyoshi; Isikawa, Yosikazu; Kuwai, Tomohiko; Mitsuda, Akihiro; Mizushima, Toshio.

In: Physica B: Condensed Matter, Vol. 378-380, No. SPEC. ISS., 01.05.2006, p. 677-678.

Research output: Contribution to journalArticle

Ikeno, Tsuyoshi ; Isikawa, Yosikazu ; Kuwai, Tomohiko ; Mitsuda, Akihiro ; Mizushima, Toshio. / Non-magnetic-doublet ground state in PrInCu2; Enhancement of the specific-heat coefficient at low temperatures. In: Physica B: Condensed Matter. 2006 ; Vol. 378-380, No. SPEC. ISS. pp. 677-678.
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