Superconductivity of FeSe0.89 crystal with hexagonal and tetragonal structures

被引：30

作者：

Zhang, S. B. ^{[1
]}

Zhu, X. D. ^{[1
]}

Lei, H. C. ^{[1
]}

Li, G. ^{[1
]}

Wang, B. S. ^{[1
]}

Li, L. J. ^{[1
]}

Zhu, X. B. ^{[1
]}

Yang, Z. R. ^{[1
]}

Song, W. H. ^{[1
]}

Dai, J. M. ^{[1
]}

Sun, Y. P. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

[2] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2009年 / 22卷 / 07期

关键词：

IRON; SPIN;

D O I：

10.1088/0953-2048/22/7/075016

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, the FeSe0.89 crystal is grown by the flux method. Structural measurements imply that hexagonal and tetragonal crystal phases coexist in our sample, which are confirmed by x-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). According to the electrical properties, the FeSe0.89 crystal undergoes a superconducting transition at T-C = 9.91 K. The experimental results demonstrate that the FeSe0.89 crystal is a type-II superconductor with H-c1(0) of 9.5 Oe and H-c2(0) of 33.4 T. The coherent length xi(0), Ginzberg-Landau parameter kappa(0) and penetration length lambda(0) are calculated to be approximately 3.14, 321 and 1007.9 nm, respectively.

引用

页数：5

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