Superconductivity induced by Ni doping in BaFe2As2 single crystals

被引：268

作者：

Li, L. J. ^{[1
]}

Luo, Y. K. ^{[1
]}

Wang, Q. B. ^{[1
]}

Chen, H. ^{[1
]}

Ren, Z. ^{[1
]}

Tao, Q. ^{[1
]}

Li, Y. K. ^{[1
]}

Lin, X. ^{[1
]}

He, M. ^{[1
]}

Zhu, Z. W. ^{[1
]}

Cao, G. H. ^{[1
]}

Xu, Z. A. ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

来源：

NEW JOURNAL OF PHYSICS | 2009年 / 11卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1088/1367-2630/11/2/025008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A series of 122 phase BaFe2-xNixAs2 (x = 0, 0.055, 0.096, 0.18 and 0.23) single crystals was grown by the self-flux method and a dome-like Ni doping dependence of the superconducting transition temperature was discovered. The transition temperature T-c(on) reaches a maximum of 20.5K at x = 0(096, and it drops to below 4K as x >= 0.23. The negative thermopower in the normal state indicates that the electron-like charge carrier indeed dominates in this system. This Ni-doped system provides another example of superconductivity induced by electron doping in the 122 phase.

引用

页数：8

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