SUBSTITUTION OF 3D METALS FOR CU IN BI2(SR0.6CA0.4)3CU2OY

被引：131

作者：

MAEDA, A

YABE, T

TAKEBAYASHI, S

HASE, M

UCHINOKURA, K

机构：

[1] Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.41.4112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the substitution of 3d metals (Fe, Co, Ni, and Zn) for Cu in a high-temperature superconductor Bi2(Sr,Ca)3Cu2Oy was investigated by measuring lattice constants, dc resistivity, Hall effect, and magnetic susceptibilities in normal and superconducting phases. For all kinds of impurities, within the composition range where the single-phase samples are synthesized, the superconducting transition temperature Tc was found to decrease with increasing impurity concentration. Even nonmagnetic Zn was found to decrease Tc, as well as, magnetic Fe, Co, and Ni, without changing the hole concentration. These behaviors cannot be explained by the Abrikosov-Gorkov theory for conventional BCS superconductors. Possible explanations are discussed. © 1990 The American Physical Society.

引用

页码：4112 / 4117

页数：6

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