Regensburg 2016 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 48: Poster Session II

MA 48.69: Poster

Donnerstag, 10. März 2016, 15:00–18:00, Poster B1

Electronic structure of topological insulators — •Michael Czerner, Jonas Friedrich Schäfer, Christian Franz, and Christian Heiliger — Justus Liebig University, Giessen, Germany

We present electronic structure calculations of the topological insulators Bi₂Te₃, Bi₂Se₃, Sb₂Te₃ by means of the Korringa-Kohn-Rostoker Green function method (KKR) based on density functional theory. Since spin-orbit coupling is important for the topological protected surface states, a fully-relativistic treatment is necessary. We show that the electronic structure is very sensitive to the chosen representation of the underlying potentials. We discuss the differences in the results of the atomic sphere approximation in comparison to a full-potential description and show the need of a full-potential calculation to catch the details of the electronic structure.