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2012 | 121 | 2 | 310-312
Article title

Ultrafast Dynamics of Photoinduced Electronic Phase Modulation in Ladder Cuprate of Sr_{14 - x}Ca_{x}Cu_{24}O_{41}

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EN
Abstracts
EN
Ultrafast carrier dynamics caused by photoexcitation in quasi-one-dimensional two-leg ladder cuprate Sr_4Ca_{10}Cu_{24}O_{41} was investigated by the femtosecond reflection spectroscopy. After the photoexcitation along the leg direction, the transient reflectivity changes (Δ R/R) in the mid-infrared region showed instant decrease within 150 fs. The suppressed Δ R/R increased so rapidly on the picosecond time scale that the reflectivity value finally became larger than that in the initial state. Such a successive response in Δ R/R, which was also observed in other photon energy regions, is discussed in terms of ultrafast variation of the Drude weight in the ladder system by the photoirradiation.
Keywords
EN
Contributors
author
  • CREST, Japan Science and Technology Agency (JST), Meguro-ku, Tokyo 152-8551, Japan
  • Department of Materials Science, Tokyo Institute of Technology, Megro-ku, Tokyo 152-8551, Japan
author
  • CREST, Japan Science and Technology Agency (JST), Meguro-ku, Tokyo 152-8551, Japan
author
  • CREST, Japan Science and Technology Agency (JST), Meguro-ku, Tokyo 152-8551, Japan
author
  • CREST, Japan Science and Technology Agency (JST), Meguro-ku, Tokyo 152-8551, Japan
author
  • Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan
author
  • CREST, Japan Science and Technology Agency (JST), Meguro-ku, Tokyo 152-8551, Japan
  • Department of Materials Science, Tokyo Institute of Technology, Megro-ku, Tokyo 152-8551, Japan
author
  • Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
author
  • Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n203kz
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