Abstract
We report a Zn-doping effect on BaFe1.92Pt0.08As2 (Tc =24.5 K) single crystal. Tc rapidly decreases with increasing the Zn content in the lattice, revealing a distinct feature which is highly contrasted with the intrinsic scattering feature induced by Pt. Doped Zn completely kills the superconductivity by no more than 8 atomic %, while intrinsic scattering induced by doped Pt shows a good coexistence with the superconductivity. The results are discussed in connection with the s±- and s++-wave models.
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