Berlin 2012 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 9: Transport: Topological Insulators 1 (jointly with TT, MA)
HL 9.6: Vortrag
Montag, 26. März 2012, 10:45–11:00, H 3010
Landau levels in a topological insulator — •Peter Schwab and Michael Dzierzawa — Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany
Two recent experiments successfully observed Landau levels in the tunneling spectra of the topological insulator Bi2Se3. To mimic the influence of a scanning tunneling microscope tip on the Landau levels we solve the two-dimensional Dirac equation in the presence of a localized electrostatic potential. We find [1] that the STM tip not only shifts the Landau levels, but also suppresses for a realistic choice of parameters the negative branch of Landau levels.
[1] P. Schwab and M. Dzierzawa, arXiv:1107.0827