DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2019 – wissenschaftliches Programm

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

O: Fachverband Oberflächenphysik

O 39: Poster Tuesday: 2D Materials

O 39.1: Poster

Dienstag, 2. April 2019, 18:00–20:00, Poster D

Electric pathways on the nanoscale — •Johannes Aprojanz1, Pantelis Bampoulis2,4, Alexei A. Zakharov3, Harold J. W. Zandvliet2, and Christoph Tegenkamp1,41Institut für Physik, Technische Universität Chemnitz, Germany — 2Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, The Netherlands — 3MAX IV Laboratory and Lund University, 221 00 Lund, Sweden — 4Institut für Festkörperphysik, Leibniz Universität Hannover, Germany

The electronic performance of graphene nanoribbons (GNRs) is essentially influenced by their edge termination and environment. Hence, the integration of these graphene nanostructures in future carbon-based nanoelectronics demands a profound understanding of charge transport as well as the identification of defects and interactions with the substrate, which crucially limit the propagation of charge carriers. In this study, we explore the electronic properties of both zig-zag (zz) and armchair (ac) GNR epitaxially grown on SiC templates. By means of comprehensive lateral force, conductive atomic force and nanoprobe measurements, we have directly imaged a nanoscale conductive channel, located at the bottom edge of a zz-GNR, and confirmed its ballistic nature by probe spacing dependent nanoprobe measurements. SiC substrate steps were identified as dominant charge scattering centers for this edge mode. Semi-conducting characteristics were observed for ac-GNR caused by the nano-faceting of the sidewall resulting in an array of mini-terraces. Finally, we have assigned buffer layer formation on flat SiC nanoterraces and suspended GNRs at their step edges.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2019 > Regensburg