Lattice instability coupled with valence degrees of freedom in valence fluctuation compound YbPd

Satoshi Tsutsui, Takumi Hasegawa, Akihiro Mitsuda, Masaki Sugishima, Kohei Oyama, Masaichiro Mizumaki, Norio Ogita, Hirofumi Wada, Masayuki Udagawa

研究成果: Contribution to journalArticle査読

抄録

Inelastic x-ray scattering (IXS) was used to examine the valence fluctuation compound YbPd at 300 K in the Γ-X, Γ-M, X-M, and X-R directions. The obtained spectra and determined phonon dispersion relations demonstrate lattice instabilities related to the successive transitions and correlations between phonon spectra and valence degrees of freedom in YbPd. The low-lying branches in the phonon dispersion relations as well as the broadened linewidths of the IXS spectra observed around the longitudinal X point provide supporting evidence of correlation between a valence-lattice interaction and the successive transitions in YbPd. X-ray absorption spectroscopy was also performed in order to discuss correlations between lattice instabilities and Yb valence degrees of freedom in YbPd.

本文言語英語
論文番号245150
ジャーナルPhysical Review B
102
24
DOI
出版ステータス出版済み - 12 30 2020

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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