Commensurate antiferromagnetic ordering in Ba(Fe{1-x}Co{x})2As2 determined by x-ray resonant magnetic scattering at the Fe K-edge

TL;DR

This study uses x-ray resonant magnetic scattering to determine that both parent and Co-doped BaFe2As2 compounds exhibit commensurate antiferromagnetic order, aligning experimental results with theoretical calculations.

Contribution

First direct x-ray resonant magnetic scattering measurements confirming commensurate magnetic order in both parent and doped BaFe2As2 compounds.

Findings

Magnetic structure is commensurate in both compounds

Energy spectrum matches theoretical calculations

Provides high-resolution magnetic ordering data

Abstract

We describe x-ray resonant magnetic diffraction measurements at the Fe K-edge of both the parent BaFe2As2 and superconducting Ba(Fe0.953Co0.047)2As2 compounds. From these high-resolution measurements we conclude that the magnetic structure is commensurate for both compositions. The energy spectrum of the resonant scattering is in reasonable agreement with theoretical calculations using the full-potential linear augmented plane wave method with a local density functional.