Theoretical Investigation of Optical Conductivity in Ba [Fe(1-x)Co(x)]2 As2

Abstract

We report on theoretical calculations of the optical conductivity of Ba [Fe(1-x)Co(x)]2 As2, as obtained from density functional theory within the full potential LAPW method. A thorough comparison with experiment shows that we are able to reproduce most of the observed experimental features, in particular a magnetic peak located at about 0.2 eV which we ascribe to antiferromagnetic ordered magnetic stripes. We also predict a large in-plane anisotropy of this feature, which agrees very well with measurements on detwinned crystals. The effect of Co doping as well as the dependence of plasma frequency on the magnetic order is also investigated.

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Cited by in corpus (4)

• Unprecedented anisotropic metallic state in BaFe2As2 revealed by optical spectroscopy
• Extended Drude model and role of interband transitions in the mid-infrared spectra of pnictides
• Theoretical investigation of the electronic and magnetic properties of the orthorhombic phase of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Study of the hyperfine fields in the BaFe${}_2$As${}_2$ family and its relation to the magnetic moment