Doping Effects of Co, Ni, and Cu in FeTe0.65Se0.35 Single Crystals

被引：11

作者：

Bezusyy, V. L. ^{[1
]}

Gawryluk, D. J. ^{[1
]}

Berkowski, M. ^{[1
]}

Cieplak, M. Z. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

ACTA PHYSICA POLONICA A | 2012年 / 121卷 / 04期

基金：

欧洲研究理事会;

关键词：

D O I：

10.12693/APhysPolA.121.816

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The resistivity, magnetoresistance, and magnetic susceptibility are measured in single crystals of FeTe0.65Se0.35 with Cu, Ni, and Co substitutions for Fe. The crystals are grown by Bridgman's method. The resistivity measurements show that superconductivity disappears with the rate which correlates with the nominal valence of the impurity. From magnetoresistance we evaluate doping effect on the basic superconducting parameters, such as upper critical field and coherence length. We find indications that doping leads to two component superconducting behavior, possibly because of local charge depression around impurities.

引用

页码：816 / 819

页数：4

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