Regensburg 2016 – wissenschaftliches Programm

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

TT: Fachverband Tiefe Temperaturen

TT 58: Transport: Poster Session

TT 58.47: Poster

Mittwoch, 9. März 2016, 15:00–18:30, Poster D

Magnetotransport in 3d topological insulator nanowires — •Raphael Kozlovsky, Sven Essert, Cosimo Gorini, Matthias Stosiek, and Klaus Richter — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany

We investigate the transport characteristics of nanowires and nanotubes in external electric and magnetic fields, using mainly numerical tools. In particular, we are interested in systems consisting of three-dimensional topological insulator (3d TI) materials, which we model by bulk and surface Hamiltonians. In such 3d-TI nanowires, a magnetic field along the wire leads to prominent Aharonov-Bohm oscillations that indicate the surface nature of the Dirac states forming due to a non-trivial topological invariant. We investigate their transport properties with specific focus on wires with a non-constant radius along the wire direction giving rise to a spatial variation of the enclosed magnetic flux.