Electron-Strain Interaction in Valence Fluctuation Compound SmB6

Shintaro Nakamura, Terutaka Goto, Mitsuo Kasaya, Satoru Kunii

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Temperature dependence of the elastic constants in the valence fluctuation compound of SmB6 and the reference one of LaB6 has been investigated by an ultrasonic method. The DC sputtering technique of a piezoelectric ZnO film on SmB6 has been employed for a reliable ultrasonic measurement free from bond breaks. A remarkable softening of the bulk modulus CB and an anomaly of the C44 mode in SmB6 are responsible for the interaction between the elastic strain and the narrow 4f-band state with the energy gap of 160 K around the Fermi level.

Original languageEnglish
Pages (from-to)4311-4318
Number of pages8
Journaljournal of the physical society of japan
Volume60
Issue number12
DOIs
Publication statusPublished - 1991 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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