Scatter Plot from Scientific Research

Flux creep rate S as a function of Gi –1/2 at t = T / T c = 0.25 and 1 T for Y123 and three classes of iron-based superconductors. Data for the 11-type material (FeSe) is from the literature 50 . Increasing electron concentration decreases S for SmFeAsO 0.632 H 0.368 . This tendency was also observed for YBa 2 Cu 3 O y with increased hole concentration 3 and BaFe 2 (As 1– x P x ) 2 with increased chemical pressure. The grey region indicates ranges of S below the predicted lower limit 43 , indicated by the equation S =Gi 1/2 ( T /T c ).

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