CU-SITE DOPING EFFECTS, TRANSPORT AND MAGNETIC-PROPERTIES OF HIGH-TC OXIDES AND THEIR HOLE CONCENTRATION-DEPENDENCE

被引：51

作者：

HARASHINA, H ^{[1
]}

NISHIKAWA, T ^{[1
]}

KIYOKURA, T ^{[1
]}

SHAMOTO, S ^{[1
]}

SATO, M ^{[1
]}

KAKURAI, K ^{[1
]}

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

来源：

PHYSICA C | 1993年 / 212卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90495-C

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Doping effects have been studied by using La2-ySryCu1-xMxO4 (M=Zn, Ni and Mg) and YBa2(Cu1-xZnx)3O6+y. The rate of T(c)-suppression, \dT(c)/dx\, is found to be inversely proportional to the carrier concentration p. The disappearance of the superconductivity with Cu-site doping seems to be primarily due to the loss of the itinerant nature of the holes, which is supported by the variation of the spectral function chi''(omega) of the magnetic excitations with temperature, studied by neutron scattering on YBa2(Cu0.965Zn0.035)3O6.75. The peak of Hall coefficient versus T curves and the ''spin gap'' effect found in the T-dependence of the resistivities rho become less significant with Zn-doping.

引用

页码：142 / 150

页数：9

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