The vortex state of FeSe1-xTex superconducting thin films

被引：15
作者：
Chang, H. H. [1 ,2 ]
Luo, J. Y. [3 ]
Wu, C. T. [1 ]
Hsu, F. C. [2 ]
Huang, T. W. [3 ,4 ]
Wu, P. M. [5 ]
Wu, M. K. [3 ]
Wang, M. J. [2 ,3 ]
机构：
[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
[2] Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan
[3] Acad Sinica, Inst Phys, Taipei 115, Taiwan
[4] Swiss Fed Labs Mat Sci & Technol, CH-8600 Dubendorf, Switzerland
[5] Lund Univ, S-22100 Lund, Sweden
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2011年 / 24卷 / 10期
关键词：
SINGLE-CRYSTAL; TRANSPORT; CREEP; FESE; MGB2;
D O I：
10.1088/0953-2048/24/10/105011
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the vortex dynamics of tellurium substituted FeSe1-xTex superconducting thin films. The electric field versus current density (E-J) curve for films with low Te substitution is still governed by the thermally activated flux flow model at temperatures as low as 0.5T(C)(offset). In contrast, we clearly observed a vortex liquid-glass transition in films with high Te substitution. The E-J curves of these samples fit nicely to the scaling relations based on the 3D vortex glass theory. Our results reveal an enhancement of the vortex pinning as more Te content is introduced, which probably originates from the excess Fe at the interstitial site.
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页数：5
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