Nonequilibrium superconductivity in Y1-xPrxBa2Cu3O7 thin films

被引：11

作者：

Averitt, RD ^{[1
]}

Thorsmolle, VK ^{[1
]}

Jia, QX ^{[1
]}

Trugman, SA ^{[1
]}

Taylor, AJ ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 312卷

关键词：

ultrafast; superconductivity; terahertz;

D O I：

10.1016/S0921-4526(01)01166-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have measured the picosecond conductivity dynamics in Y1-x-PrxBa2Cu3O7 thin films from 0.3-2.0 THz. Our experimental technique measures the complex conductivity sigma(rc)(omega) + isigma(im)(omega) permitting the simultaneous observation of superconducting pair and quasiparticle dynamics. We emphasize aspects of the conductivity dynamics which extend our previous results (Phys. Rev. B 63 (2001) 140502(R)). In particular, the recovery of sigma(rc) is faster than sigma(im) and the recovery of c;, decreases with increasing frequency. This suggests another carrier relaxation pathway. in addition to superconducting pair recovery, following optical excitation. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：86 / 87

页数：2

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