Fe K-edge X-ray resonant magnetic scattering from Ba(Fe1−xCox)2As2 superconductors
Ames Laboratory, U.S. DOE and Department of Physic and Astronomy, Iowa State University, Ames IA 50011, USA
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Revised: 23 March 2012
Published online: 15 June 2012
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(Fe1−xCox)2As2 superconductors.
© EDP Sciences, Springer-Verlag, 2012