Abstract
We report on the transport properties of FeSe\(_{1-x}\)S\(_{x}\) single crystals for x = 0.04, 0.09, and 0.19. These compounds show a consequent increase in the superconducting transition temperature to about 10.5 K for x = 0.04 and 0.09 followed by a decrease to 8.5 K for x = 0.19, completing the superconducting dome of the FeSe\(_{1-x}\)S\(_{x}\) series phase diagram. The sample with the highest substitution level x = 0.19 shows no transition to an orthorhombic phase at low temperatures. Therefore, the suppression of the low temperature structural transition in FeSe\(_{1-x}\)S\(_{x}\) coincides with the start of the steep decrease in the superconducting transition temperature.
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Acknowledgments
This work was supported by Act 211 Government of the Russian Federation, agreement No. 02.A03.21.0006, RFBR Grants 13-02-00174, 14-02-92002 and 15-03-99628a, RSCF Grant 14-13-00738 and in part from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS” (Grants K4-2015-020 and K2-2015-075).
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Ovchenkov, Y.A., Chareev, D.A., Presnov, D.E. et al. Superconducting Properties of FeSe\(_{1-x}\)S\(_{x}\) Crystals for x up to 0.19. J Low Temp Phys 185, 467–473 (2016). https://doi.org/10.1007/s10909-016-1593-x
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DOI: https://doi.org/10.1007/s10909-016-1593-x