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TT: Fachverband Tiefe Temperaturen

TT 33: Superconductivity, Measuring Devices, Matter at Low Temperature: Poster Session

TT 33.9: Poster

Mittwoch, 28. März 2012, 15:00–19:00, Poster B

In-plane/out-of-plane resistivity anisotropy of Co-doped BaFe₂As₂ — •Oleksii Vakaliuk, Manoj Kumar, Saicharan Aswartham, Sabine Wurmehl, Christian Hess, and Bernd Büchner — IFW Dresden

We present an experimental study of the in-plane and out-of-plane electrical resistivities (ρ_ab, ρ_c respectively) of Ba(Fe_1−xCo_x)₂As₂ with x=0; 0.05; 0.075; 0.1; 0.125. The anisotropy γ = ρ_c/ ρ_ab is temperature independent. This suggests an isotropic electron scattering mechanism. We observe a monotonic decrease of γ with changing the doping, suggestive of 2D-3D crossover of the electron structures.