Non-quasiparticle states in the core level spectra of ferromagnetic semiconductors and half-metallic ferromagnets

V. Yu. Irkhin () and M. I. Katsnelson ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2005, vol. 43, issue 4, 479-487

Abstract: The Green’s functions that determine X-ray spectra are calculated in the s-d 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. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Date: 2005
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DOI: 10.1140/epjb/e2005-00081-y

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