https://doi.org/10.1140/epjb/e2005-00081-y
Non-quasiparticle states in the core level spectra of ferromagnetic semiconductors and half-metallic ferromagnets
1
Institute of Metal Physics, Ekaterinburg 620219, Russia
2
Department of Physics, Uppsala University, Uppsala 751 21,
Sweden
3
Institute for Molecules and Materials, Radboud University,
Nijmegen 6525 ED, The Netherlands
Corresponding authors: a Valentin.Irkhin@imp.uran.ru - b M.Katsnelson@science.ru.nl
Received:
16
October
2004
Published online:
30
March
2005
The Green's functions that determine X-ray spectra are calculated
in the 
exchange model of a saturated conducting ferromagnet
in the presence of the core hole. It is demonstrated that the core
level (X-ray absorption, emission and photoelectron) spectroscopy
might be an efficient tool to investigate the nonquasiparticle
(NQP, spin-polaron) states in electron energy spectrum since the
core hole potential can enhance essentially their spectral weight.
NQP contributions to resonant X-ray scattering spectra can be also
much more pronounced than those to the the density of states.
PACS: 78.70.Dm – X-ray absorption spectra / 78.70.En – X-ray emission spectra and fluorescence / 75.50.Pp – Magnetic semiconductors / 75.50.Cc – Other ferromagnetic metals and alloys
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005
