A single crystal of isovalently substituted Ba(Fe1−xRux)2As2 (x=0.24) is sequentially irradiated with 2.5 MeV electrons up to a maximum dose of 2.1×1019 e−/cm2. The electrical resistivity is measuredin situ at T=22 K during the irradiation and ex situ as a function of temperature between subsequent irradiation runs. Upon irradiation, the superconducting… (More)
FIG. 4. Experimental data for ΔTc=Tc0 (symbols) versus measured change in resistivity Δρ0 for single crystal of BaðFe1−xRuxÞ2As2 (x ¼ 0.24). Lines are the fits to a t-matrix calculation for disorder self-energy with a fixed η ¼ 0.74, assuming the same density of states and taking Fermi velocity of vF ¼ 2 × 106 m=s for both bands. Three theory lines correspond to the ratio of interband to intraband scattering α ¼ 1.0, 0.65, and 0.5. Solid straight lines show average Tc suppression of 50 mK=μΩ cm by transition metal impurities M substituted into Ba0.5K0.5ðFe1−xMxÞ2As2 from Ref.  and obtained in this work 350 mK=μΩ cm. The top axis shows dimensionless scattering rate gλ calculated from the resistivity and penetration depth, Eq. (1).