Ultrafast dynamics of photoinduced electronic phase modulation in ladder cuprate of Sr14-xCaxCu24O41

R. Fukaya, M. Kunitomo, Y. Okimoto, T. Ishikawa, K. Onda, S. Koshihara, H. Yui, T. Sasagawa

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

Ultrafast carrier dynamics caused by photoexcitation in quasi-one-dimensional two-leg ladder cuprate Sr4Ca 10Cu24O41 was investigated by the femtosecond reflection spectroscopy. After the photoexcitation along the leg direction, the transient reflectivity changes (ΔR/R) in the mid-infrared region showed instant decrease within 150 fs. The suppressed ΔR/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 ΔR/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.

本文言語英語
ページ(範囲)310-312
ページ数3
ジャーナルActa Physica Polonica A
121
2
DOI
出版ステータス出版済み - 2 2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

フィンガープリント

「Ultrafast dynamics of photoinduced electronic phase modulation in ladder cuprate of Sr<sub>14-x</sub>Ca<sub>x</sub>Cu<sub>24</sub>O<sub>41</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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