Magnetic circularly polarized 2p resonant photoemission of nickel

Tjeng, L. H.; Chen, C. T.; Rudolf, P.; Meigs, G.; Vanderlaan, G.; Thole, B. T.

doi:10.1103/PhysRevB.48.13378

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Magnetic circularly polarized 2p resonant photoemission of nickel

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Tjeng, L. H., Chen, C. T., Rudolf, P., Meigs, G., Vanderlaan, G., & Thole, B. T. (1993). Magnetic circularly polarized 2p resonant photoemission of nickel. Physical Review B, 48(18), 13378-13382. doi:10.1103/PhysRevB.48.13378.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-1871-3

Abstract

We report the observation of two resonance channels in the 2p resonant photoemission of ferromagnetic nickel using circularly polarized soft x rays. By identifying the local 3d8 and 3d7 configurations in the valence-band photoemission spectra, we are able to assign structures in 2p core-level-absorption and magnetic-circular-dichroism spectra to many-body 2p(5)3d10 and 2p(5)3d9 configurations as well as to a critical point in the band structure. The Ni data provide a critical test for theoretical models of x-ray absorption and magnetic-circular-dichroism spectroscopy of transition-metal magnetic materials. This work also demonstrates the unique possibilities provided by circularly polarized light for separating the Auger process from the resonant-photoemission process and unraveling the electronic structure.