Ultrafast Phase-Coherence in Normal State of Underdoped Bi2Sr2CaCu2O8 + δ Thin Film

被引：0

作者：

H. Murakami

M. Tonouchi

T. Uchiyama

I. Iguchi

Z. Wang

机构：

[1] Osaka University,Research Center for Superconductor Photyonics

[2] CREST-JST,Department of Physics

[3] Tokyo Institute of Technology,Communication Research Laboratory

[4] CREST-JST,undefined

[5] Kansai Advanced Research Center,undefined

来源：

Journal of Superconductivity | 2002年 / 15卷

关键词：

terahertz; Bi; Sr; CaCu; O; pseudogap; relaxation time;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A phase-sensitive time-domain terahertz-transmission spectroscopy was carried out on a c-axis oriented underdoped Bi2Sr2CaCu2O8 + δ 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* ∼ 210 K because of the appearance of partial phase-coherence with an ultrashort lifetime less than about 1 ps.

引用

页码：345 / 350

页数：5

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