LIFSHITZ CORRELATION IN THE HOPPING CONDUCTIVITY OF HIGH-TEMPERATURE SUPERCONDUCTORS IN THE LOCALIZED STATE

被引：3

作者：

KOSTADINOV, IZ

ALEXANDROV, B

机构：

[1] Department of Physics, University of Sofia

来源：

PHYSICA C | 1992年 / 201卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90113-Q

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present experimental data concerning the temperature dependence of the resistivity of 3 different compounds from the family of high-temperature superconductors (HTS), measured by different groups and also including our results for Nd2-xCexCuO4+delta, Tl1Ba1V6Ox and Y1Ba2Cu3Ox. We conjecture that these data give us reasons to make a conclusion about the existence of Lifshitz correlations among the defect levels in the case when they have a decisive role for the charge transport. The hopping conductivity was calculated to be ln (sigma/sigma0) approximately ln3(T/T0).

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页码：126 / 130

页数：5

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