Superconducting fluctuations in the reversible magnetization of the iron-pnictide $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$

S. Salem-Sugui, L. Ghivelder, A. D. Alvarenga +4

We report on isofield magnetization curves obtained as a function of temperature in two single crystals of $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$ with superconducting transition temperature $T_c$=2…