Magnetic X-Ray Dichroism and Anisotropy Energy of Fe and Co Multilayers
Abstract
A relativistic, spin-polarized band theory of magnetic x-ray dichroism (MXD) in solids is briefly described. Calculated circular and linear dichroic x-ray absorptions at the L2, 3 edges from bulk Fe and Co as well as from their multilayers are presented. Large circular MXD is predicted in both the bulks and the multilayers. In contrast, linear MXD is predicted to be small in these systems. The recent proposed orbital magnetization sum rule [B. I. Thole et al, Phys. Rev. Lett. 68, 1943 (1992)] is found to hold only qualitatively within the band theory. Magnetic anisotropy energies of these Fe and Co multilayers have also been calculated. All multilayers considered, are found to have a perpendicular magnetic anisotropy.
Keywords
Anisotropy Energy Circular Magnetic Dichroism Perpendicular Magnetic Anisotropy Band Theory Magnetic Anisotropy EnergyPreview
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