Giant lattice softening in the normal state of CeRu2

Takashi Suzuki, Hiroshi Goshima, Shigenobu Sakita, Toshizo Fujita, Masato Hedo, Yoshihiko Inada, Etsuji Yamamoto, Yoshinori Haga, Yoshitika Ônuki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Elastic moduli of high-quality single-crystalline CeRu2 have been measured between 2 and 300 K by an ultrasonic technique. Both shear moduli of (C11 - C12)/2 and C44 show a giant softening without structural transition. In contrast to the shear moduli, the bulk modulus CB indicates a normal temperature dependence without the anomalous softening. These results reveal that there exists a remarkable structural fluctuation corresponding to shearing strain in the normal state of CeRu2. The analysis taking account of the deformation potential coupling between the strain and an electronic energy band demonstrates that degenerate and peaked density of states is responsible for the softening.

Original languageEnglish
Pages (from-to)176-178
Number of pages3
JournalPhysica B: Condensed Matter
Volume230-232
Publication statusPublished - Feb 1997
Externally publishedYes

Fingerprint

softening
Elastic moduli
shear
bulk modulus
shearing
energy bands
modulus of elasticity
ultrasonics
Shearing
Band structure
temperature dependence
Ultrasonics
Crystalline materials
electronics
Temperature

Keywords

  • CeRu
  • Electronic band structure
  • Lattice softening
  • Ultrasonic measurement

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Suzuki, T., Goshima, H., Sakita, S., Fujita, T., Hedo, M., Inada, Y., ... Ônuki, Y. (1997). Giant lattice softening in the normal state of CeRu2. Physica B: Condensed Matter, 230-232, 176-178.

Giant lattice softening in the normal state of CeRu2. / Suzuki, Takashi; Goshima, Hiroshi; Sakita, Shigenobu; Fujita, Toshizo; Hedo, Masato; Inada, Yoshihiko; Yamamoto, Etsuji; Haga, Yoshinori; Ônuki, Yoshitika.

In: Physica B: Condensed Matter, Vol. 230-232, 02.1997, p. 176-178.

Research output: Contribution to journalArticle

Suzuki, T, Goshima, H, Sakita, S, Fujita, T, Hedo, M, Inada, Y, Yamamoto, E, Haga, Y & Ônuki, Y 1997, 'Giant lattice softening in the normal state of CeRu2', Physica B: Condensed Matter, vol. 230-232, pp. 176-178.
Suzuki T, Goshima H, Sakita S, Fujita T, Hedo M, Inada Y et al. Giant lattice softening in the normal state of CeRu2. Physica B: Condensed Matter. 1997 Feb;230-232:176-178.
Suzuki, Takashi ; Goshima, Hiroshi ; Sakita, Shigenobu ; Fujita, Toshizo ; Hedo, Masato ; Inada, Yoshihiko ; Yamamoto, Etsuji ; Haga, Yoshinori ; Ônuki, Yoshitika. / Giant lattice softening in the normal state of CeRu2. In: Physica B: Condensed Matter. 1997 ; Vol. 230-232. pp. 176-178.
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