High temperature resistivity of electron doped BaFe<sub>2</sub>As<sub>2</sub> based superconductors
ORAL
Abstract
M. A. Tanatar, E. H. Krenkel, S. L. Bud’ko, P.C. Canfield, R. Prozorov
Ames Laboratory, Iowa State University
Department of Physics and Astronomy, Iowa State University, Ames, Iowa State University
High temperature (up to 600 K) in-plane resistivity measurements were performed in electron doped iron based superconductors Ba(Fe1-xCox)2As2 over a range of compositions from magnetically ordered parent x=0 to non-superconducting x=0.35. Phonon contribution was determined by measurements on heavily doped compositions beyond pseudogap regime [1] showing normal metallic temperature independent Hall effect and magnetic susceptibility. Anomalous magnetic scattering characteristic of the parent compound diminishes with doping, correlating with suppression of the room temperature resistivity. Comparison with other magnetic itinerant system with dominant spin disorder scattering, LaCrGe3, is made.
[1] M. A. Tanatar, N. Ni, A. Thaler, S. L. Bud’ko, P. C. Canfield, and R. Prozorov, Phys. Rev. B82, 134528 (2010).
Ames Laboratory, Iowa State University
Department of Physics and Astronomy, Iowa State University, Ames, Iowa State University
High temperature (up to 600 K) in-plane resistivity measurements were performed in electron doped iron based superconductors Ba(Fe1-xCox)2As2 over a range of compositions from magnetically ordered parent x=0 to non-superconducting x=0.35. Phonon contribution was determined by measurements on heavily doped compositions beyond pseudogap regime [1] showing normal metallic temperature independent Hall effect and magnetic susceptibility. Anomalous magnetic scattering characteristic of the parent compound diminishes with doping, correlating with suppression of the room temperature resistivity. Comparison with other magnetic itinerant system with dominant spin disorder scattering, LaCrGe3, is made.
[1] M. A. Tanatar, N. Ni, A. Thaler, S. L. Bud’ko, P. C. Canfield, and R. Prozorov, Phys. Rev. B82, 134528 (2010).
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Presenters
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Makariy A Tanatar
Iowa State University and Ames Laboratory, Ames Laboratory/Iowa State University, Ames National Laboratory
Authors
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Makariy A Tanatar
Iowa State University and Ames Laboratory, Ames Laboratory/Iowa State University, Ames National Laboratory