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

V. Yu. Irkhin, M. I. Katsnelson

cond-mat.str-elarXiv:cond-mat/0401625

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. A possibility to observe non-quasiparticle (NQP) states in the core level (x-ray absorption, emission and photoelectron) spectroscopy is demonstrated. It is shown that NQP contributions to resonant x-ray scattering spectra can be considerably enhanced by core hole effects in comparison with those to the density of states.

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