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Resonant photoemission at the Ni 2 p core level as a probe of electron correlation effects in nickel

1992; American Physical Society; Volume: 46; Issue: 15 Linguagem: Inglês

10.1103/physrevb.46.9336

1095-3795

G. van der Laan, M. Surman, M. A. Hoyland, C. F. J. Flipse, B. T. Thole, Y. Seino, Hirohito Ogasawara, A. Kotani,

Ion-surface interactions and analysis

The observed enhancement in the 3d, 3p, and 3s photoemission structures at resonance with the 2p absorption edge of nickel is analyzed using a cluster calculation including multiplet structure. The result strongly supports the view of a localized electronic structure for nickel metal. It is found that the peak splitting in the 3s photoemission is due to d mixing, whereas the 3p photoemission shows the influence of both d mixing and electrostatic interaction.