Superconductivity at 25K in hole-doped (La1-xSr4x) OFeAs

被引：536

作者：

Wen, Hai-Hu ^{[1
,2
]}

Mu, Gang ^{[1
,2
]}

Fang, Lei ^{[1
,2
]}

Yang, Huan ^{[1
,2
]}

Zhu, Xiyu ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Natl Lab Superconduct, Inst Phys, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

EPL | 2008年 / 82卷 / 01期

关键词：

D O I：

10.1209/0295-5075/82/17009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By partially substituting the tri-valence element La with di-valence element Sr in LaOFeAs, we introduced holes into the system. For the first time, we successfully synthesized the hole-doped new superconductors (La1-xSrx) OFeAs. The maximum superconducting transition temperature at about 25K was observed at a doping level of x=0.13. It is evidenced by Hall effect measurements that the conduction in this type of material is dominated by hole-like charge carriers, rather than electron-like ones. Together with the data of the electron-doped system La(O1-xFx) FeAs, a generic phase diagram is depicted and is revealed to be similar to that of the cuprate superconductors. Copyright (c) EPLA, 2008.

引用

页数：5

共 14 条

[1] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].