Monotonic Doping-Dependence in the Anisotropy of the Drude Weight and Scattering Rate of Detwinned Ba(Fe1-x Co (x) )(2)As-2 Established from the Optical Conductivity
- Journal Article
Rights / licenseIn Copyright - Non-Commercial Use Permitted
We investigate the anisotropic metallic response in the optical conductivity of fully detwinned Ba(Fe1−x Co x )2As2 in their underdoped regime. We estimate the Drude weight and the scattering rates of the itinerant charge carriers across the structural (at T s ) and magnetic (at T N ) phase transition. Our findings support a monotonic doping dependence of the anisotropy of both parameters determining the transport properties, opposite to the non-monotonic anisotropy of the dc resistivity between the crystallographic axes. The capability of optical methods to address a broad energy interval extending far away from the Fermi level allows emphasizing the prominent role of the electronic structure rather than the impurity scattering when establishing a direct connection with the long-range ferro-orbital and antiferromagnetic orders. Show more
Journal / seriesJournal of Superconductivity and Novel Magnetism
Pages / Article No.
SubjectIron-pnictide superconductors; Optical properties
Organisational unit03569 - Batlogg, Bertram (emeritus)
NotesIt was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
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