Theoretical description of the Fano-effect in the angle-integrated valence-band 
photoemission of paramagnetic solids

Minar, J.; Ebert, H.; Tjeng, L. H.; Steeneken, P.; Ghiringhelli, G.; Tjernberg, O.; Brookess, N. B.

doi:10.1007/s003390100957

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Theoretical description of the Fano-effect in the angle-integrated valence-band photoemission of paramagnetic solids

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Minar, J., Ebert, H., Tjeng, L. H., Steeneken, P., Ghiringhelli, G., Tjernberg, O., et al. (2001). Theoretical description of the Fano-effect in the angle-integrated valence-band photoemission of paramagnetic solids. Applied Physics A, 73(6), 663-666. doi:10.1007/s003390100957.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-1EB2-5

Abstract

A theoretical description of the Fano-effect in the angle-integrated valence-band photoemission (VB XPS) of paramagnetic solids is presented that is based on the one-step model of photoemission and relativistic multiple scattering theory. Applications to fcc-Cu and fcc-Ag led to a very satisfying agreement with recent experimental data that show the Fano-effect, i.e., a finite spin polarisation of the photoelectrons is found for excitation with circularly polarised radiation. As can be demonstrated by model calculations, this finding is caused by the presence of spin-orbit coupling. To allow for a more detailed discussion of the spectra, a simplified description of the Fano-effect is presented that treats spin-orbit coupling as a perturbation.