Huge Lattice Softening in CeRu2 without Structural Transition

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

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Symmetrized elastic moduli of high-quality single-crystalline CeRu2 have been measured between 2 and 300 K by means of an ultrasonic technique. Both transverse moduli (C11 -C12)/2 and C44 soften markedly from 300 to ∼20 K without structural transition. In contrast, the bulk modulus CB shows a normal temperature dependence without softening. These results indicate that there exists a marked structural fluctuation corresponding to a pure transverse strain in the normal conducting state of CeRu2. Our analysis, taking account of the deformation potential coupling, reveals that a narrow band with relatively high density of states at EF is responsible for the huge lattice softening.

Original languageEnglish
Pages (from-to)2753-2756
Number of pages4
JournalJournal of the Physical Society of Japan
Volume65
Issue number9
Publication statusPublished - 1996
Externally publishedYes

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softening
bulk modulus
narrowband
modulus of elasticity
ultrasonics
conduction
temperature dependence

Keywords

  • Band structure
  • CeRu
  • Deformation potential coupling
  • Elastic modulus
  • Elastic softening
  • Ultrasonic measurement

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Suzuki, T., Goshima, H., Sakita, S., Fujita, T., Hedo, M., Inada, Y., ... Önuki, Y. (1996). Huge Lattice Softening in CeRu2 without Structural Transition. Journal of the Physical Society of Japan, 65(9), 2753-2756.

Huge Lattice Softening in CeRu2 without Structural Transition. / Suzuki, Takashi; Goshima, Hiroshi; Sakita, Shigenobu; Fujita, Toshizo; Hedo, Masato; Inada, Yoshihiko; Yamamoto, Etsuji; Haga, Yoshinori; Önuki, Yoshichika.

In: Journal of the Physical Society of Japan, Vol. 65, No. 9, 1996, p. 2753-2756.

Research output: Contribution to journalArticle

Suzuki, T, Goshima, H, Sakita, S, Fujita, T, Hedo, M, Inada, Y, Yamamoto, E, Haga, Y & Önuki, Y 1996, 'Huge Lattice Softening in CeRu2 without Structural Transition', Journal of the Physical Society of Japan, vol. 65, no. 9, pp. 2753-2756.
Suzuki T, Goshima H, Sakita S, Fujita T, Hedo M, Inada Y et al. Huge Lattice Softening in CeRu2 without Structural Transition. Journal of the Physical Society of Japan. 1996;65(9):2753-2756.
Suzuki, Takashi ; Goshima, Hiroshi ; Sakita, Shigenobu ; Fujita, Toshizo ; Hedo, Masato ; Inada, Yoshihiko ; Yamamoto, Etsuji ; Haga, Yoshinori ; Önuki, Yoshichika. / Huge Lattice Softening in CeRu2 without Structural Transition. In: Journal of the Physical Society of Japan. 1996 ; Vol. 65, No. 9. pp. 2753-2756.
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