Superconductivity and crystal structures of (Ba1-xKx)Fe2AS2 (x=0-1)

被引：362

作者：

Rotter, Marianne ^{[1
]}

Pangerl, Michael ^{[1
]}

Tegel, Marcus ^{[1
]}

Johrendt, Dirk ^{[1
]}

机构：

[1] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 41期

关键词：

barium; iron arsenides; phase transitions; potassium; superconductors;

D O I：

10.1002/anie.200803641

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Doping improves performance: Iron arsenides (Ba1-xK x)Fe2As2 with the ThCr2Si 2-type structure exhibit superconductivity at 3-38 K depending on the potassium doping level. Superconductivity occurs before the structural distortion of the parent compound BaFe2As2 (x=0) is completely suppressed by doping (see phase diagram; • critical temperature, ○ phase-transition temperature). Doping decreases the bond angles in the iron arsenide layers, suggesting a strong coupling of structural and electronic degrees of freedom. (Graph Presented). © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：7949 / 7952

页数：4

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