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Title
Japanese: 
English:Unconventional Photonic Change of Charge-Density-Wave Phase in Two-Leg Ladder Cuprate Sr14Cu24O41 
Author
Japanese: 深谷 亮, 沖本 洋一, 國友 美弥子, 石川 忠彦, 恩田 健, 腰原 伸也, 諫山 晃, 笹川 崇男.  
English: Ryo Fukaya, Yoichi Okimoto, Miyako Kunitomo, Tadahiko Ishikawa, Ken Onda, Shin-ya Koshihara, A. Isayama, Takao Sasagawa.  
Language English 
Journal/Book name
Japanese: 
English:Journal of the Physical Society of Japan 
Volume, Number, Page Vol. 82    No. 8    pp. 083707
Published date July 12, 2013 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://journals.jps.jp/doi/abs/10.7566/JPSJ.82.083707
 
DOI https://doi.org/10.7566/JPSJ.82.083707
Abstract The photoinduced transition from the charge-density-wave (CDW) phase to the metallic phase in low-dimensional ladder-type cuprate Sr14Cu24O41 was investigated in terms of femtosecond time-resolved reflection spectroscopy. Following the melting of the CDW order just after photoexcitation, a Drude-like metallic state was formed with a large optical response and maintained for more than 50 ps. The Drude weight increased with increasing fluence with threshold behavior as a result of the cooperative interactions in the CDW domains and reached the value of the Drude weight in the hole-doped metallic compound of Sr4Ca10Cu24O41. These results indicate the photoinduced formation of a similar metallic state driven by hole doping

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