The photon-energy (h{ν}) dependence of the angle-integrated and angle-resolved photoemission from Ni(110) has been measured to investigate the valence-band satellite. Contrary to the earlier observations, we found that the satellite moves with h{ν}. The satellite centroid is observed at {~}6.0 eV below the Fermi energy (EF), away from the 3p-3d resonance, and at {~}6.8 eV in the region of the resonance. The difference spectra show that on resonance the highest-binding-energy part (at {~}7.3 eV) of the satellite is additionally enhanced. The results are discussed in terms of the singlet and triplet satellites.
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Sakisaka et al. (1987) studied this question.
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