Thorium-doping-induced superconductivity up to 56 K in Gd1-xThxFeAsO

被引：579

作者：

Wang, Cao ^{[1
]}

Li, Linjun ^{[1
]}

Chi, Shun ^{[1
]}

Zhu, Zengwei ^{[1
]}

Ren, Zhi ^{[1
]}

Li, Yuke ^{[1
]}

Wang, Yuetao ^{[1
]}

Lin, Xiao ^{[1
]}

Luo, Yongkang ^{[1
]}

Jiang, Shuai ^{[1
]}

Xu, Xiangfan ^{[1
]}

Cao, Guanghan ^{[1
]}

Xu, Zhu'an ^{[1
]}

机构：

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

来源：

EPL | 2008年 / 83卷 / 06期

关键词：

D O I：

10.1209/0295-5075/83/67006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a new strategy to induce superconductivity in iron-based oxyarsenide. Instead of F- substitution for O2-, we employed Th4+ doping in GdFeAsO with the consideration of "lattice match" between Gd2O2 layers and Fe2As2 ones. As a result, superconductivity with T-c(onset) as high as 56 K was realized in a Gd0.8Th0.2FeAsO polycrystalline sample. This T-c value is among the highest ever discovered in the iron-based oxypnictides. Copyright (C) EPLA, 2008

引用

页数：4

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