Out-of-plane dielectric constant and insulator-superconductor transition in Bi2Sr2Dy1-xErxCU2O8 single crystals

被引：11

作者：

Takayanagi, T ^{[1
]}

Kogure, M ^{[1
]}

Terasaki, I ^{[1
]}

机构：

[1] Waseda Univ, Dept Appl Phys, Tokyo 1698555, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2002年 / 14卷 / 06期

关键词：

D O I：

10.1088/0953-8984/14/6/321

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The out-of-plane dielectric constant of the parent insulator of the high-temperature superconductor Bi2Sr2Dy1-xErxCu2O8 was measured and analysed from 80 to 300 K in the frequency range of 10(6)-10(9) Hz. All the samples were found to show a fairly large value of 10-60, implying some kind of charge inhomogeneity in the CuO2 plane. Considering that the superconducting sample Bi2Sr2Ca0.75Pr0.25Cu2O8 also shows a similar dielectric constant, the charge inhomogeneity plays an important role in the insulator-superconductor transition.

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页码：1361 / 1370

页数：10

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