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

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number235131
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number23
DOIs
Publication statusPublished - 2009 Jun 24
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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