Superconductivity Induced by Co-Doping in Quaternary Fluoroarsenide CaFeAsF

被引：183

作者：

Matsuishi, Satoru ^{[1
]}

Inoue, Yasunori ^{[2
]}

Nomura, Takatoshi ^{[2
]}

Yanagi, Hiroshi ^{[2
]}

Hirano, Masahiro ^{[1
,3
]}

Hosono, Hideo ^{[1
,2
,3
]}

机构：

[1] Tokyo Inst Technol, Frontier Res Ctr, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[3] Tokyo Inst Technol, ERATO, JST, SORST,Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 44期

关键词：

D O I：

10.1021/ja806357j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new quaternary fluoroarsenide CaFeAsF with the tetragonal ZrCuSiAs-type structure composed of alternate stacking of (FeAs)(delta-) and (CaF)(delta+) layers was synthesized. CaFeAsF is a poor metal and shows the anomaly at similar to 120 K in temperature dependence of electrical conductivity. The electron doping by the partial replacement of the iron with cobalt suppresses the anomaly and induces the bulk superconductivity (optimal T-c = 22 K for CaFe0.9Co0.1AsF), analogues to recently discovered FeAs-based superconductors. The present results suggest that CaFeAsF is a promising candidate as a parent compound for high T-c superconductors.

引用

页码：14428 / +

页数：3

共 25 条

[1]

[Anonymous], 2005, TOPAS VERS 3

[2] Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO1-xFxFeAs [J].

Chen, G. F. ;

Li, Z. ;

Wu, D. ;

Li, G. ;

Hu, W. Z. ;

Dong, J. ;

Zheng, P. ;

Luo, J. L. ;

Wang, N. L. .

PHYSICAL REVIEW LETTERS, 2008, 100 (24)

[3]

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

[4] Superconductivity at 43 K in SmFeAsO1-xFx [J].

Chen, X. H. ;

Wu, T. ;

Wu, G. ;

Liu, R. H. ;

Chen, H. ;

Fang, D. F. .

NATURE, 2008, 453 (7196) :761-762

[5] 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

[6]

HSU FC, ARXIVCONDMAT08072369

[7] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K [J].

Kamihara, Yoichi ;

Watanabe, Takumi ;

Hirano, Masahiro ;

Hosono, Hideo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3296-+

[8]

MARGADONNA S, ARXIVCONDMAT08063962

[9]

MIZUGUCHI Y, ARXIVCONDMAT08074315

[10] VESTA:: a three-dimensional visualization system for electronic and structural analysis [J].

Momma, Koichi ;

Izumi, Fujio .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2008, 41 :653-658

← 1 2 3 →