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arXiv · 1107.0095

Effect of Co Impurities on Superconductivity of FeSe0.4Te0.6 single crystals

Fuyuki Nabeshima·Yusuke Kobayashi·Yoshinori Imai·Ichiro Tsukada·Atsutaka Maeda
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Abstract

The effect of Co doping on supercoductivity of FeSe$_{0.4}$Te$_{0.6}$ single crystals is investigated. The superconducting transition temperature decreases linearly for Co doping with the rate -0.75 K/(Co %). On the other hand, the residual resistivity increase is less than 50 $/mu/Omega$cm for 4 % Co doping. These data are consistent with the sign changing interband scattering mechanism of superconductivity ($s_/pm$ symmetry).

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Fuyuki Nabeshima, Yusuke Kobayashi, Yoshinori Imai, Ichiro Tsukada, Atsutaka Maeda. 2011-08-12. Effect of Co Impurities on Superconductivity of FeSe0.4Te0.6 single crystals. https://doi.org/10.1143/jjap.51.010102

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