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
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页码：19 / 22
页数：4
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