Regensburg 2010 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 31: Poster I: Devices, Quantum Dots and Quantum Wires
HL 31.23: Poster
Tuesday, March 23, 2010, 18:30–20:30, Poster D1
Nanostructured Graphene Devices — •Jan Dauber1, Bernat Terres1, and Christoph Stampfer1,2 — 1JARA-FIT and II. Institute of Physics, RWTH Aachen, Germany — 2Institute of Bio and Nanosystems, FZ Jülich, Germany
Graphene is the first real two-dimensional solid consisting of a hexagonal lattice of carbon atoms, revealing a high carrier mobility and quantum Hall effect even at room temperature. First graphene quantum devices have been recently demonstrated, such as graphene nanoribbons, quantum interference devices, graphene single electron transistors and quantum dots. Here, we report on the fabrication and characterization of nanostructured graphene devices based on width-modulated graphene nanoribbons. The graphene nanodevices are fabricated by mechanical exfoliation, lithography and dry etching techniques. We show that to a large extend the device functionality can be engineered by the shape of the nanostructured device. Finally, we discuss the electrostatic tunability of graphene nanodevices.