Microscopic, Transport and Thermodynamic properties of Ca$_{10}$(Pt$_{3}$As$_{8}$)((Fe$_{1-x}$TM$_{x}$)$_{2}$As$_{2}$)$_{5}$ (TM=Co, Ni) single crystals

Here we report detailed microscopic, transport and thermodynamic measurements on two series of high quality single crystals Ca$_{10}$(Pt$_{3}$As$_{8}$)((Fe$_{1-x}$TM$_{x}$)$_{2}$As$_{2}$)$_{5}$ (TM=Co, Ni). With electron doping on Fe sites, the structural/magnetic phase transitions in the parent compound were suppressed at a rate of roughly -7K per 0.01Co doping and -9K per 0.01Ni doping. Superconductivity emerges in the region of $0.048<\mathrm{x}<0.20$ for Co doping with optimal Tc of 13.5K ($\mathrm{x}=0.11$) while it occurs in the region of $0.035<\mathrm{x}<0.11$ for Ni doping with optimal Tc of 9.6K ($\mathrm{x}=0.064$). No coexistence of AFM and SC is observed, which is different from the well-studied 122 Fe-pnictides but reminiscent the one of La1111. The comparison of the effect between Co- and Ni- doping on 10-3-8 shows that rigid band approximation is likely working for these two dopants in this superconducting family.