Role of magnetism in superconductivity of BaFe2As2: Study of 5d Au-doped crystals

Article

关键词: IRON-BASED SUPERCONDUCTORS;    ELECTRONIC-STRUCTURE;    CHEMISTRY;    MODEL;    FE;   

DOI  :  10.1103/PhysRevB.92.094504

来源: SCIE

【 摘 要 】

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 similar to 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)(2)As-2.

【 授权许可】

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