Spectroscopic study of photoinduced charge-gap collapse in the correlated insulators Pr1-xCaxMnO3

T. Tonogai, T. Satoh, K. Miyano, Y. Tomioka, Y. Tokura

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18 Citations (Scopus)

Abstract

We observed an instantaneous reflectance change triggered by pulse laser irradiation. The laser heating cannot account for the action spectra, which are indicative of the charge-gap collapse. It is found in Ph1-xCaxMnO3 for a wide range of Ca doping, x=0, 0.1, 0.2, 0.31, 0.4, and 0.5, which suggests that the photoinduced charge gap collapse is not characteristic of charge-ordered insulators. We propose that the photoinduced charge gap collapse can be a general behavior in strongly correlated insulators.

Original languageEnglish
Pages (from-to)13903-13906
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number21
DOIs
Publication statusPublished - Dec 1 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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