Raman study of the orbital-phonon coupling in LaCoO3

A. Ishikawa, J. Nohara, S. Sugai

研究成果: Article査読

120 被引用数 (Scopus)

抄録

The effects of the eg orbital order on the phonon modes were investigated by Raman scattering in LaCoO3. Raman scattering has an advantage to find out the change induced by the orbital states, because of Raman activity of all phonon modes are created by the distortion from the cubic perovskite structure. The quadrupole mode shows the anomalous softening, enhancement and broadening as the occupancy of the intermediate spin (IS) state increases. The results show that all Raman active phonon modes are affected by the excitation of IS Co3+ ions and shows anomalous temperature dependence.

本文言語English
論文番号136401
ページ(範囲)136401-1-136401-4
ジャーナルPhysical review letters
93
13
DOI
出版ステータスPublished - 2004 9 24

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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