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HL: Fachverband Halbleiterphysik

HL 39: Posters II (Topological insulators; Graphene; Spintronics and spin physics; Quantum information science)

HL 39.11: Poster

Dienstag, 17. März 2015, 14:00–20:00, Poster F

Stacked Graphene nanostructures produced from transfered layers — •Christopher Belke, Dmitri Smirnov, Johannes C. Rode, Hennrik Schmidt, and Rolf J. Haug — Institut für Festkörperphysik, Leibniz Universität Hannover, D-30167 Hannover, Germany

Here we report on graphene sheets, stacked by a transfer method [1] to produce novel complex layersystems.
Graphene is exfoliated on a thin PMMA layer, which can be detached from the silicon wafer. This layer is then placed on other graphene mono- or bilayer flakes.
The samples were characterized at low temperatures and in dependence of a magnetic field. Measurements show interesting novel effects, e. g. high resistance extrema near the charge neutrality point and magnetic field independent oscillations.

[1] C. Dean et al. Nature Nanotechnology 5, 722 (2010)