Ultrafast phase-coherence in normal state of underdoped Bi2Sr2CaCu2O8+δ thin film

被引：3
|
作者：
Murakami, H [1 ]
Tonouchi, M
Uchiyama, T
Iguchi, I
Wang, Z
机构：
[1] Osaka Univ, Res Ctr Supercond Phytyon, Osaka 5650871, Japan
[2] CREST JST, Osaka 5650871, Japan
[3] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
[4] CREST JST, Meguro Ku, Tokyo 1528551, Japan
[5] Kansai Adv Res Ctr, Commun Res Lab, Kobe, Hyogo 6512492, Japan
来源：
JOURNAL OF SUPERCONDUCTIVITY | 2002年 / 15卷 / 05期
关键词：
terahertz; Bi2Sr2CaCu2O8+delta; pseudogap; relaxation time;
D O I：
10.1023/A:1021066012747
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A phase-sensitive time-domain terahertz-transmission spectroscopy was carried out on a c-axis oriented underdoped Bi2CaCu2O8+delta thin film. We directly extracted the complex refractive index and conductivity at frequencies from 0.3 to 1.5 THz by numerically solving the observed complex transmittance without Kramers-Kronig analysis. The frequency-resolved real and imaginary part of the conductivity (1.0 THz < f) showed a measurable increase below the characteristic temperature of T* similar to 210 K because of the appearance of partial phase-coherence with an ultrashort lifetime less than about 1 ps.
引用
收藏
页码：345 / 350
页数：6
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