Superconductivity in oxygen-annealed FeTe1-xSx single crystal
Superconductivity in oxygen-annealed FeTe1-xSx single crystal
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DOI：
10.1063/1.3531554
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
Y. Mizuguchi;K. Deguchi;Y. Kawasaki;T. Ozaki;M. Nagao;S. Tsuda;T. Yamaguchi;Y. Takano
中科院分区：
文献类型：
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作者：
Y. Mizuguchi;K. Deguchi;Y. Kawasaki;T. Ozaki;M. Nagao;S. Tsuda;T. Yamaguchi;Y. Takano
研究了FeTe_（1-x）Sx单晶中S掺杂驱动的从反铁磁到超导的相变。Te部分被S取代抑制了Fe方晶格中的反铁磁性。氧退火诱导的超导性只有FeTe 1-xSx的长程磁有序被抑制。为了在FeTe 1-xSx中实现超导电性，需要足够的S浓度来抑制反铁磁性和氧退火。氧退火的FeTe 0.886S 0.114的超导性的各向异性估计为1.17。
We investigated the S-doping-driven phase transition from antiferromagnetic to superconducting in FeTe1-xSx single crystals. The partial substitution of Te by S suppresses antiferromagnetism in Fe-square lattice. Superconductivity is induced by oxygen annealing for only FeTe1-xSx in which the long-range magnetic ordering is suppressed. To realize superconductivity in FeTe1-xSx, both S concentration enough to suppress antiferromagnetism and oxygen annealing are required. Anisotropy of superconductivity in oxygen-annealed FeTe0.886S0.114 was estimated to be 1.17.