Observation of strongly damped GHz phonon-polariton oscillations in La0.67Ca0.33MnO3

Y. H. Ren, X. H. Zhang, G. Lüpke, M. Schneider, M. Onellion, I. E. Perakis, Y. F. Hu, Qi Li

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Abstract

We report on the first observation of strongly damped phonon-polariton beats and picosecond carrier relaxation dynamics of La0.67Ca0.33MnO3 near the metal-insulator phase transition. The observed 60 GHz coherent oscillations show clear softening as the temperature approaches TC and persist well into the ferromagnetic-metallic state. The characteristic energy and the fast decay component of the transient reflectivity signal near TC is directly related to the Jahn-Teller distortions.

Original languageEnglish (US)
Article number144401
Pages (from-to)1444011-1444015
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number14
DOIs
StatePublished - Oct 1 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Ren, Y. H., Zhang, X. H., Lüpke, G., Schneider, M., Onellion, M., Perakis, I. E., Hu, Y. F., & Li, Q. (2001). Observation of strongly damped GHz phonon-polariton oscillations in La0.67Ca0.33MnO3. Physical Review B - Condensed Matter and Materials Physics, 64(14), 1444011-1444015. [144401]. https://doi.org/10.1103/PhysRevB.64.144401