Paraconductivity and phase-relaxation time in YBa2Cu3Ox thin films

被引：1
|
作者：
Gueffaf, A [1 ]
Salim, M
Raven, MS
Bousbahi, K
机构：
[1] Univ Nottingham, Sch Elect & Elect Engn, Nottingham NG7 2RD, England
[2] Univ Sci & Technol Oran, Oran El Mnaouer, Algeria
来源：
PHYSICA B | 2000年 / 284卷
关键词：
paraconductivity; phase-relaxation time; YBa2Cu3Ox;
D O I：
10.1016/S0921-4526(99)02319-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We present results of the c-axis coherence length xi(c)(0) and the phase-relaxation time tau(phi) (at 100 K) obtained from the fit to paraconductivity data for YBCO thin films. The average values for xi(c)(0) and tau(phi) (at 100 K) are 0.183 nm and 0.18 x 10(-12) s, respectively. We find that three of our films which are oxygen-deficient have c-axis coherence lengths ranging from 0.049 to 0.090 nm. The phase-relaxation time decreases with increasing T-c with mean-slope = - 6.15 x 10(-15) s K-1 and a minima at 81 K. (C) 2000 Elsevier Science B.V. All rights reserved.
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收藏
页码：985 / 986
页数：2
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