DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

O: Fachverband Oberflächenphysik

O 47: Poster: Graphene - Electronic Properties, Structure, Adsorption, Intercalation and Doping (joint session O/TT)

O 47.3: Poster

Tuesday, March 13, 2018, 18:15–20:30, Poster A

Preparation and characterization of high quality stacks of graphene/h-BN/graphite picked up by a mica substrate — •Michael Weimer1, Tjorven Johnsen1, Sayanti Samaddar1, Peter Nemes-Incze2, and Markus Morgenstern11II. Institute of Physics B, RWTH Aachen University and JARA-FIT, Otto-Blumenthal-Straße, 52074 Aachen, Germany — 2Centre of Energy Research, Institute of Technical Physics and Materials Science, Nanotechnology Department, 2D NanoFab ERC Research Group, Budapest, 1525, POB 49, Hungary

Graphene on h-BN provides a highly mobile two-dimensional electron system (2DES) which can be characterized by scanning tunneling microscopy (STM). In combination with transport experiments, a comparison of global and local properties of the sample is feasible. Such combination requires an ultra clean graphene surface and at least two electrical contacts. Therefore we present a dry and polymer free preparation technique by using a mica substrate. We exfoliate graphite on mica and subsequently pick up h-BN and graphene from a SiO2/Si chip one after another. Shadow mask evaporation of gold provides clean contacting. Omitting wet chemical methods and polymers enables ultra clean surfaces with low impurity concentration.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2018 > Berlin