Magneto-Acoustic Effect of Heavy Fermion Compound CeInCu2

Hiroshi Matsui, Terutaka Goto, Tadao Fujimura, Yoshichika Ōnuki, Takemi Komatsubara, Yosikazu Isikawa, Kiyoo Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We measured the temperature dependences of elastic constants of the heavy fermion compound CeInCu2 and the reference compound LaInCu2. The transverse C44 and (C11-C12)/2 modes in CeInCu2 exhibit monotonous temperature dependences. The bulk modulus CB, however, shows an anomalous softening of 6% below 130 K, which is in contrast to the normal behavior in LaInCu2. The anomalies of CB in CeIn-Cu2 indicate the coupling between the volume strain and the heavy fermion state with a large electronic Griineisen constant Ωg = 50 at 5 K.

Original languageEnglish
Pages (from-to)3451-3454
Number of pages4
Journaljournal of the physical society of japan
Issue number10
Publication statusPublished - 1990 Jan 1
Externally publishedYes


  • CeInCu
  • elastic constant
  • heavy fermion
  • ultrasonic

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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