Detecting charge and lattice dynamics in photoinduced charge-order melting in perovskite-type manganites using a 30-femtosecond time resolution

Hiroyuki Matsuzaki, Hirotaka Uemura, Masakazu Matsubara, Tsuyoshi Kimura, Yoshinori Tokura, Hiroshi Okamoto

研究成果: Article査読

33 被引用数 (Scopus)

抄録

We investigated the ultrafast dynamics of photoinduced melting of charge and orbital order in a perovskite-type manganite, Nd0.5 Ca0.5 MnO3, by means of pump-probe reflection spectroscopy. By irradiation with a 20-fs laser pulse, only the charge sectors become melted within ∼30 fs through strong electron correlations. During this process the oxygen displacements associated with the ordered phase persist. These displacements are subsequently released accompanied by several coherent oscillations. The coherent oscillation corresponding to the Jahn-Teller mode has relatively large amplitude demonstrating that the orbital order plays a significant role on the stabilization of the charge order.

本文言語English
論文番号235131
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
79
23
DOI
出版ステータスPublished - 2009 6 24
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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