Ultrasonic propagation of a metallic domain in Pr0.5Ca0.5CoO3 undergoing a photoinduced insulator-metal transition.

@article{Okimoto2009UltrasonicPO,
  title={Ultrasonic propagation of a metallic domain in Pr0.5Ca0.5CoO3 undergoing a photoinduced insulator-metal transition.},
  author={Yoichi Okimoto and Xihong Peng and Motohide Tamura and Taichi Morita and Ken Onda and Tetsuya Ishikawa and Shin-ya Koshihara and Norikazu Todoroki and Tōru Kyōmen and Mitsuru Itoh},
  journal={Physical review letters},
  year={2009},
  volume={103 2},
  pages={
          027402
        }
}
Femtosecond optical response was investigated on a perovskite-type cobalt oxide, Pr0.5Ca0.5CoO3 during an insulator-metal (I-M) transition accompanied with the change in spin configuration. After photoirradiation at 30 K, the reflectivity showed a sudden and large increase with subsequent variation depending on the observed photon energy. An exact calculation of Maxwell's equations for the Pr0.5Ca0.5CoO3 after the photoirradiation enabled us to observe the ultrafast dynamics of I-M phase… CONTINUE READING
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