Dynamics of photoinduced phenomena in AV 10O 15 (A = Ba, Sr)

A. Nogami, K. Takubo, T. Kajita, M. Hoshino, T. Katsufuji

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4 Citations (Scopus)

Abstract

We studied the dynamics of photoinduced phenomena in AV 10O 15 (A=Ba, Sr), where the ground state changes from an insulating state with V trimerization (Ba) to another insulating state with no structural anomaly (Sr). We found that the time dependence of photoinduced reflectivity change is similar up to several picoseconds, but is critically different in the range of several tens of picoseconds between the two compounds. These different behaviors can be attributed to the coupled mode of the photoexcited electronic state and the lattice distortion, which propagates in the crystal of SrV 10O 15 but is trapped in the local minimum of the free energy in BaV 10O 15.

Original languageEnglish
Article number214442
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number21
DOIs
Publication statusPublished - 2011 Dec 29

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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