Spin-resolved x-ray-photoelectron-spectroscopy study of ferromagnetic iron

A spin-resolved x-ray-photoelectron-spectroscopy study of the deep core levels of ferromagnetic Fe are reported. The 2${\mathit{p}}_{3/2}$, 2${\mathit{p}}_{1/2}$, and 2s core levels, as well as the more shallow 3p level, all display interesting spin-dependent structures. These findings indicate the importance of intra-atomic exchange in deep-core-level photoemission from Fe. The electronic response of the metal to core-hole creation is found to be dependent on the spin of the core hole.