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MA: Magnetismus

MA 13: Poster:Schichten(1-23),Spinabh.Trsp(24-41),Exch.Bias(42-56),Spindyn.(57-67),Mikromag.(68-76),Partikel(77-90),Spinelektr.(91-97),Elektr.Theo.(98-99),Mikromag+PhasÜ+Aniso.(100-105),Magn.Mat.(106-118),Messmethod.(119-121),Obflm.+Abbverf.(122-123)

MA 13.20: Poster

Dienstag, 9. März 2004, 15:00–19:00, Bereich A

Temperature-dependent surface state and magnetization of thin ferromagnetic EuS films — •W. Nolting and W. Müller — Lehrstuhl Festkörpertheorie, Institut für Physik, Humboldt-Universität zu Berlin

We present results for the temperature- and layer-dependent electronic structure of thin ferromagnetic EuS (100) films. A combination of a many-body evaluation of a multiband Kondo-lattice model and a first-principles band structure calculation (TB-LMTO) is used to get as realistically as possible temperature- and correlation effects. The calculated layer dependent magnetization shows a good agreement with the experiment. The results are discussed in terms of spectral densities, densities of states and band-structures. Special attention is devoted to the appearance of magnetic 5d-surface states.