Berlin 2008 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 18: Poster I : Bio Magn. (1-2); Mag.Imgaging (3-9); Magn. Semiconductors (10-16); Half Metals & Oxides (17-20); Coupl.Phenomena (21-27); Magn. Mat. (28-41); Micro & Nanostr. Magn. Materials (42-61); Micro Magn. (62-64); Surface Magnetism (65-70); Transport Phenomena (71-85)
MA 18.20: Poster
Dienstag, 26. Februar 2008, 15:15–18:30, Poster E
Electronic Structure of shandite Co3Sn2S2 — •Matthias Holder1, Yuri S. Dedkov1, Serguei L. Molodtsov1, and Helge Rosner2 — 1Institut für Festkörperphsik, Technische Universität Dresden, 01062 Dresden, Germany — 2Max-Planck Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany
From theoretical calculation within LSDA method the ground state of shandite Co3Sn2S2 is predicted to be ferromagnetic with a tiny gap in the minority spin channel. Previous experimental results from magnetic susceptibility, specific heat, and resistivity measurements on powder samples showed a phase transition to a ferromagnetic metallic state at 177 K with a saturation moment of 0.87µB/f.u. Here we present the results of studies of its electronic structure by means of spin- and angle- resolved photoemission on poly- and singlecristalline Co3Sn2S2 samples. Experimental results are discussed in the framework of existing spin- resolved band- structure calculations.