X-ray scattering from magnetically and structurally rough surfaces

We present expressions for the resonant magnetic X-ray scattering (XRMS) by surfaces possessing roughness and analyze both the structural and magnetic roughness of a surface, as well as their correlation. We demonstrate that the leading contribution to the difference (Delta I) in the diffuse scatter ing between left- and right-circularly polarized light for a rough surface vanishes unless the structural and magnetic roughnesses are correlated, to leading order in the magnetization. The effects of magnetic domain structur e and magnetic dead layers on the surface scattering are also discussed. (C ) 1999 Published by Elsevier Science B.V. All rights reserved.