Nonequilibrium THz conductivity of Bi2Sr2CaCu2O8+δ

被引：10
|
作者：
Carnahan, MA
Kaindl, RA
Orenstein, J
Chemla, DS
Oh, S
Eckstein, JN
机构：
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[3] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 408卷
关键词：
THz spectroscopy; superconductivity; Bi-2212;
D O I：
10.1016/j.physc.2004.03.056
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using high-sensitivity visible-pump/THz-probe spectroscopy we investigate the dynamics of the complex optical conductivity, sigma(omega) = sigma(1)(omega) + isigma(2)(omega), in optimally-doped Bi2Sr2CaCu2O8+delta films directly after photoexcitation. The photoinduced change in the imaginary part Deltasigma(2), indicative of a reduction in the superconducting condensate density, saturates at higher laser-fluences and shows a complete destruction of the condensate. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：729 / 730
页数：2
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