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

被引：361

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

共 36 条

[1]

ALIREZA PL, 2008, ARXIV08071896

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

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[3]

Chen GF, 2008, CHINESE PHYS LETT, V25, P3403, DOI 10.1088/0256-307X/25/9/083

[4] Magnetic order close to superconductivity in the iron-based layered LaO1-xFxFeAs systems [J].

de la Cruz, Clarina ;

Huang, Q. ;

Lynn, J. W. ;

Li, Jiying ;

Ratcliff, W., II ;

Zarestky, J. L. ;

Mook, H. A. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. ;

Dai, Pengcheng .

NATURE, 2008, 453 (7197) :899-902

[5]

FINGER LW, 1992, J APPL CRYSTALLOGR, V27, P79

[6]

Hellmann A, 2007, Z NATURFORSCH B, V62, P155

[7] MAKING AND BREAKING BONDS IN THE SOLID-STATE - THE THCR2SI2 STRUCTURE [J].

HOFFMANN, R ;

ZHENG, C .

JOURNAL OF PHYSICAL CHEMISTRY, 1985, 89 (20) :4175-4181

[8]

JEEVAN HS, 2008, ARXIV08072530

[9] ZRCUSIAS - FILLED PBFCL-TYPE [J].

JOHNSON, V ;

JEITSCHKO, W .

JOURNAL OF SOLID STATE CHEMISTRY, 1974, 11 (02) :161-166

[10] LMTO band structure calculations of ThCr2Si2-type transition metal compounds [J].

Johrendt, D ;

Felser, C ;

Jepsen, O ;

Andersen, OK ;

Mewis, A ;

Rouxel, J .

JOURNAL OF SOLID STATE CHEMISTRY, 1997, 130 (02) :254-265

← 1 2 3 4 →