Superconductivity above 50 K in Tb1-xThxFeAsO

被引：61

作者：

Li, Lin-Jun ^{[1
]}

Li, Yu-Ke ^{[1
]}

Ren, Zhi ^{[1
]}

Luo, Yong-Kang ^{[1
]}

Lin, Xiao ^{[1
]}

He, Mi ^{[1
]}

Tao, Qian ^{[1
]}

Zhu, Zeng-Wei ^{[1
]}

Cao, Guang-Han ^{[1
]}

Xu, Zhu-An ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.78.132506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have successfully synthesized one member of LnFeAsO (Ln stands for lanthanides) with Ln=Tb. By partial substitution of Tb(3+) by Th(4+), superconductivity with onset T(c) up to 52 K was observed. In the undoped parent compound, the magnetic moments of Tb(3+) ions order antiferromagnetically (AFM) at T(N) of 2.5 K, and there exists an anomaly in the resistivity at T(*) of about 124 K which corresponds to the structural phase transition and/or AFM ordering of magnetic moments of Fe(2+) ions. This anomaly is severely suppressed by Th doping, similar to the cases of F doped LnFeAsO series. Thermopower measurements show that the charge carrier is electronlike for both undoped and Th-doped compounds, and enhanced thermopower in Th-doped samples was observed.

引用

页数：4

共 24 条

[1] High pressure synthesis of late rare earth RFeAs(O,F) superconductors; R = Tb and Dy [J].

Bos, Jan-Willem G. ;

Penny, George B. S. ;

Rodgers, Jennifer A. ;

Sokolov, Dmitry A. ;

Huxley, Andrew D. ;

Attfield, J. Paul .

CHEMICAL COMMUNICATIONS, 2008, (31) :3634-3635

[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, P2235, DOI 10.1088/0256-307X/25/6/086

[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] Superconductivity at 36 K in gadolinium-arsenide oxides GdO1-xFxFeAs [J].

Cheng Peng ;

Fang Lei ;

Yang Huan ;

Zhu XiYu ;

Mu Gang ;

Luo HuiQian ;

Wang ZhaoSheng ;

Wen HaiHu .

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY, 2008, 51 (06) :719-722

[6] 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

[7] Specific heat of the iron-based high-Tc superconductor SmO1-xFxFeAs [J].

Ding, L. ;

He, C. ;

Dong, J. K. ;

Wu, T. ;

Liu, R. H. ;

Chen, X. H. ;

Li, S. Y. .

PHYSICAL REVIEW B, 2008, 77 (18)

[8] Competing orders and spin-density-wave instability in La(O1-xFx) FeAs [J].

Dong, J. ;

Zhang, H. J. ;

Xu, G. ;

Li, Z. ;

Li, G. ;

Hu, W. Z. ;

Wu, D. ;

Chen, G. F. ;

Dai, X. ;

Luo, J. L. ;

Fang, Z. ;

Wang, N. L. .

EPL, 2008, 83 (02)

[9] 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-+

[10] Anomalous transport properties and phase diagram of the FeAs-based SmFeAsO1-xFx superconductors [J].

Liu, R. H. ;

Wu, G. ;

Wu, T. ;

Fang, D. F. ;

Chen, H. ;

Li, S. Y. ;

Liu, K. ;

Xie, Y. L. ;

Wang, X. F. ;

Yang, R. L. ;

Ding, L. ;

He, C. ;

Feng, D. L. ;

Chen, X. H. .

PHYSICAL REVIEW LETTERS, 2008, 101 (08)

← 1 2 3 →