Abstract
AbstractWe report a pressure study on electron doped by electrical‐resistivity () and magnetic‐susceptibility () experiments. Application of either external pressure or Co substitution rapidly suppresses the spin‐density wave ordering of the Fe moments and induces superconductivity in . At the broad superconducting (SC) dome in the phase diagram exhibits its maximum K at a pressure of only GPa. In no superconductivity is observed anymore up to 2.8 GPa. Upon increasing the Co concentration the maximum of the SC dome shifts toward lower pressure accompanied by a decrease in the value of . Even though, superconductivity is induced by both tuning methods, Co substitution leads to a much more robust SC state. Our study evidences that in both, the effect of pressure and Co substitution, have to be considered in order to understand the SC phase‐diagram and further attests the close relationship of and its sister compound .
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