Superconductivity in the iron selenide KxFe2Se2 (0 ≤x≤1.0)

被引：1131

作者：

Guo, Jiangang ^{[1
]}

Jin, Shifeng ^{[1
]}

Wang, Gang ^{[1
]}

Wang, Shunchong ^{[1
]}

Zhu, Kaixing ^{[1
]}

Zhou, Tingting ^{[1
]}

He, Meng ^{[2
]}

Chen, Xiaolong ^{[1
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Res & Dev Ctr Funct Crystals, Beijing 100190, Peoples R China

[2] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 18期

基金：

中国国家自然科学基金;

关键词：

MAGNETIC PHASE-DIAGRAM; PRESSURE;

D O I：

10.1103/PhysRevB.82.180520

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the superconductivity at above 30 K in a FeSe-layer compound K0.8Fe2Se2 (nominal composition) achieved by metal K intercalating in between FeSe layers. It is isostructural to BaFe2As2 and possesses the highest T-c for FeSe-layer materials so far under ambient pressure. Hall effect indicates the carriers are dominated by electron in this superconductor. We confirm that the observed superconductivity at above 30 K is due to this FeSe-based 122 phase. Our results demonstrate that FeSe-layer materials are really remarkable superconductors via structure and carrier modulation.

引用

页数：4

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