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

• A theoretical description of the Fano effect in the angle-integrated valence-band photoemission of paramagnetic solids is presented that is based on the one-step model of photoemission and relativistic multiple-scattering theory. Applications to fcc-Cu led to a very satisfying agreement with recent experimental data that show the Fano effect, i.e., a finite spin-polarization for the spectra is found for excitation with circularly polarized 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.

Nyckelord

spin-polarized photoemission

ray circular-dichroism

dependent potentials

magnetic dichroism

dirac-equation

spectroscopy

ferromagnets

manipulation

absorption

alloys

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)