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The effects of isovalent Ru substitution at the Fe sites of BaFe2-xRuxAs2 areinvestigated by measuring resistivity and Hall coefficient on high-qualitysingle crystals in a wide range of doping (0 < x < 1.4). Ru substitutionweakens the antiferromagnetic (AFM) order, inducing superconductivity forrelatively high doping level of 0.4 < x < 0.9. Near the AFM phase boundary, thetransport properties show non-Fermi-liquid-like behaviors with alinear-temperature dependence of resistivity and a strong temperaturedependence of Hall coefficient with a sign change. Upon higher doping, however,both of them recover conventional Fermi-liquid behaviors. Strong dopingdependence of Hall coefficient together with a small magnetoresistance suggestthat the anomalous transport properties can be explained in terms ofanisotropic charge carrier scattering due to interband AFM fluctuations ratherthan a conventional multi-band scenario.

Evolution of transport properties of BaFe2-xRuxAs2 in a wide range of isovalent Ru substitution