Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 16: Poster I

MA 16.43: Poster

Dienstag, 12. März 2013, 10:30–13:30, Poster D

Test of band structure calculations for Heusler compounds by spin-resolved photoemission spectroscopy — Michaela Kolbe¹, Stanislav Chadov², Elena Arbelo Jorge¹, Gerd Schönhense¹, Claudia Felser², Hans-Joachim Elmers¹, Mathias Kläui¹, and •Martin Jourdan¹ — ¹Institut für Physik, Johannes Gutenberg-Universität, Staudingerweg 7, 55128 Mainz — ²Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden

The electronic density of states of epitaxial thin films of the Heusler compound Co₂MnGa is probed in situ by spin-resolved ultraviolet photoemission spectroscopy. The experiments reveal several characteristic features in the intensity spectrum and a clear Fermi edge signature. A high spin polarization of 55% at the Fermi edge is followed by a sign change at the binding energy of 0.8 eV. Corresponding calculations of the band structure and the photoemission spectrum were performed employing a spin-polarized relativistic Korringa-Kohn-Rostoker code. Good agreement between the experimental data and calculations was obtained, including dynamical correlation effects [1].

[1] M. Kolbe et al., Phys. Rev. B, 86, 024422 (2012)