Exchange, spin-orbit, and correlation effects in the soft-x-ray magnetic-circular-dichroism spectrum of nickel
- 15 March 1991
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 43 (8), 6785-6787
- https://doi.org/10.1103/physrevb.43.6785
Abstract
A tight-binding analysis of soft-x-ray-absorption and magnetic-circular-dichroism (MCD) spectra on Ni at the 2p→3d thresholds yields values for the valence spin-orbit parameter and exchange splitting which are, respectively, larger and smaller than the ground-state band-structure values by a factor of ∼2. The discrepancies are attributed to core-hole correlation effects. A feature that appears 4 eV above the main white lines, but only in the MCD spectrum, is also attributed to correlation effects.Keywords
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