Fluctuation conductivity at high temperatures in polycrystalline Hg, Tl-1223 -: Is there ID fluctuation behavior?

被引：40
作者：
Han, SH
Axnäs, J
Zhao, BR
Rapp, Ö
机构：
[1] IMIT, SE-16440 Stockholm, Sweden
[2] CAS, Inst Phys, Natl Lab Supercond, Beijing 100080, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 408卷
关键词：
fluctuation conductivity; Hg; Tl-1223;
D O I：
10.1016/j.physc.2004.03.107
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Detailed resistivity measurements were made for polycrystalline Hg1-xTlxBa2Ca2Cu3O8+delta (x = 0.2) in zero field and in the temperature region from zero resistance up to 300 K. The fluctuation conductivity Deltasigma was analyzed as a function of is an element of equivalent to In(T/Tc-mf) in the range -5.5 < Inc < -0.5. 1D behavior Of fluctuation conductivity was found at high temperatures (above the 2D regime) with a crossover temperature T-1*, above which the critical exponent was found to be -1.5. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：679 / 680
页数：2
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