Quadrupole-Strain Interaction in Rare Earth Hexaborides

Shintaro Nakamura, Terutaka Goto

Research output: Contribution to journalArticlepeer-review

133 Citations (Scopus)

Abstract

Temperature dependence of the elastic constants in a series of rare earth hexaborides has been investigated by means of the ultrasonic method. The remarkable softening of the transverse C44 mode in PrB6, NdB6, DyB6 and HoB6 has been discussed in connection with the cooperative Jahn-Teller effect due to the CEF ground state degenerated by the quadrupolar moment. The low temperature behavior of C44 in CexLa1-xB6 compounds is presented to show the Kondo effect on the quadrupolar moment of ΓT8 ground state. The anomaly of the bulk modulus CB in SmB6 is related to the valence fluctuation state in the system.

Original languageEnglish
Pages (from-to)623-636
Number of pages14
Journaljournal of the physical society of japan
Volume63
Issue number2
DOIs
Publication statusPublished - 1994 Jan 1

Keywords

  • dense Kondo effect
  • quadrupolar moment
  • quadrupolar response
  • quadrupole-strain interaction
  • rare earth hexaborides
  • ultrasound
  • valence fluctuation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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