Spin-dependent x-ray absorption in Co/Pt multilayers

Publisher Website
Google Scholar
Abstract
Spin‐dependent absorption spectroscopy or circular magnetic x‐ray dichroism studies at the L2,3 edges of 5d atoms in ferromagnetic hosts have been used to investigate the spin‐density distribution of the empty d‐projected states and thus the local magnetic moment of the absorbing 5d atoms. This method was applied to study the average polarization of the Pt atom in Co/Pt multilayers with different modulation lengths. The spin‐dependent absorption profiles for vapor‐deposited [25(4 Å Co+x Å Pt), x=9, 16, 23, 30, 40] multilayers indicate a significant average Pt polarization decreasing with the layer thickness. The experimental results are discussed in comparison with spin‐polarized relativistic band‐structure calculations (linear muffin‐tin‐orbital calculations).