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

Academic Article


  • 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.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Ren YH; Zhang XH; Lüpke G; Schneider M; Onellion M; Perakis IE; Hu YF; Li Q
  • Start Page

  • 1444011
  • End Page

  • 1444015
  • Volume

  • 64
  • Issue

  • 14