Synchrotron X-ray study of lattice vibrations in CdCr2O 4

Jung Hwa Kim, Masa Matsuda, Hiroaki Ueda, Yutaka Ueda, Jae Ho Chung, Satoshi Tsutsui, Alfred Q.R. Baron, Seung Hun Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr2O4 that upon cooling undergoes a spin-Peierls phase transition at TN = 7:8K from a cubic and paramagnetic to a tetragonal and Nee'l state. Phonon modes measured around Brillouin zone boundaries show energy shifts when the transition occurs. Our analysis shows that the shifting can be understood as the ordinary effects of the lowering of the crystal symmetry.

Original languageEnglish
Article number073603
JournalJournal of the Physical Society of Japan
Issue number7
Publication statusPublished - 2011 Jul


  • A spin-Peierls phase transition
  • Frustrated system CdCrO
  • Phonon dispersions
  • Spin-lattice coupling
  • Synchrotron inelastic x-ray scattering

ASJC Scopus subject areas

  • General Physics and Astronomy


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