Theoretical investigation of optical conductivity in Ba(Fe 1-xCo x) 2As 2

A. Sanna*, F. Bernardini, G. Profeta, S. Sharma, J. K. Dewhurst, A. Lucarelli, L. Degiorgi, E. K.U. Gross, S. Massidda

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

18 Scopus citations

Abstract

We report on theoretical calculations of the optical conductivity of Ba(Fe1-xCox )2As2, as obtained from density functional theory within the full-potential linear augmented plane-wave 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.

Original languageAmerican English
Article number054502
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number5
DOIs
StatePublished - 4 Feb 2011
Externally publishedYes

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