Se and Te Doping Study of the FeSe Superconductors

被引：0

作者：

Yeh, K. W. ^{[1
]}

Hsu, H. C. ^{[2
]}

Huang, T. W. ^{[1
]}

Wu, P. M. ^{[3
]}

Huang, Y. L. ^{[1
]}

Chen, T. K. ^{[1
]}

Luo, J. Y. ^{[1
]}

Wu, M. K. ^{[1
]}

机构：

[1] Acad Sinica, Inst Phys, Taipei, Taiwan

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan

[3] Duke Univ, Dept Phys, Durham, NC 27706 USA

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2008年 / 77卷

关键词：

field dependence resistive transition; specific heat; substitution effect;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Here we present a systematic study of correlation between superconductivity with Se-content and Te-doping to the alpha-FeSe system. Detailed structural and specific heat measurements at low temperature suggest that the occurrence of superconductivity is closely related to the presence of P-1 (triclinic) symmetry at low temperature. Magnetic field dependence of the resistive transition in polycrystalline alpha-FeSe1-x and FeSe1-xTex suggest that Te-doping tends to induce the system to become more 2D-like and enhances substantially the upper critical field value, whereas the FeSe system behaves more like 3D superconductor.

引用

页码：19 / 22

页数：4

共 5 条

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[2] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K
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Hirano, Masahiro
Hosono, Hideo
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) : 3296 - +
[3] Li L., 2008, ARXIV08090128V1
[4] Wu M.C., UNPUB
[5] Yeh K. W., 2008, EPL IN PRESS

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