%0 Journal Article
%T Role of Magnetism in Superconductivity of BaFe2As2: Study of 5d Au-doped Crystals
%A Li Li
%A Huibo B. Cao
%A Michael A. McGuire
%A Jungsoo S. Kim
%A Greg R. Stewart
%A Athena S. Sefat
%J Physics
%D 2015
%I arXiv
%R 10.1103/PhysRevB.92.094504
%X We investigate properties of BaFe2As2 (122) single crystals upon gold doping, which is the transition metal with the highest atomic weight. The Au substitution into the FeAs-planes of 122 crystal structure (Au-122) is only possible up to a small amount of ~3%. We find that 5d is more effective in reducing magnetism in 122 than its counter 3d Cu, and this relates to superconductivity. We provide evidence of short-range magnetic fluctuations and local-lattice inhomogeneities that may prevent strong percolative superconductivity in Ba(Fe1-xAux)2As2.
%U http://arxiv.org/abs/1506.08749v1