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 (13)

• In-plane electronic anisotropy of underdoped "122" Fe-arsenide superconductors revealed by measurements of detwinned single crystals
• Unprecedented anisotropic metallic state in BaFe2As2 revealed by optical spectroscopy
• Anisotropic charge dynamics in detwinned Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Origin of the resistive anisotropy in the electronic nematic phase of BaFe${}_2$As${}_2$ revealed by optical spectroscopy
• Extended Drude model and role of interband transitions in the mid-infrared spectra of pnictides
• Anisotropic in-plane optical conductivity in detwinned Ba(Fe1-xCox)2As2
• Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)2As2
• Optical Conductivity Anisotropy in the Undoped Three-Orbital Hubbard Model for the Pnictides
• Electronic structures of doped BaFe${}_2$As${}_2$ materials: virtual crystal approximation versus super-cell approach
• Origin of the DC and AC conductivity anisotropy in iron-based superconductors: scattering rate versus spectral weight effects
• Theoretical investigation of the electronic and magnetic properties of the orthorhombic phase of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Theoretical study on the anisotropic electronic structure of antiferromagnetic BaFe${}_2$As${}_2$ and Co-doped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ seen by angle-resolved photoemission
• Study of the hyperfine fields in the BaFe${}_2$As${}_2$ family and its relation to the magnetic moment