Eur. Phys. J. Special Topics 208, 157-164 (2012)
https://doi.org/10.1140/epjst/e2012-01616-1

Regular Article

Fe K-edge X-ray resonant magnetic scattering from Ba(Fe_1−xCo_x)₂As₂ superconductors

Ames Laboratory, U.S. DOE and Department of Physic and Astronomy, Iowa State University, Ames IA 50011, USA

^a e-mail: mgkim@iastate.edu

Received: 15 November 2011
Revised: 23 March 2012
Published online: 15 June 2012

Abstract

We present an X-ray resonant magnetic scattering study at the Fe-K absorption edge of the BaFe₂As₂ compound. The energy spectrum of the resonant scattering, together with our calculation using the full-potential linear-augmented plane wave method with a local density functional suggests that the observed resonant scattering arises from electric dipole (E1) transitions. We discuss the role of Fe K-edge X-ray resonant magnetic scattering in understanding the relationship between the structure and the antiferromagnetic transition in the doped Ba(Fe_1−xCo_x)₂As₂ superconductors.