Title: Peeling off graphene from Co nanoparticle covered graphite in a scanning tunneling microscope
Authors: Schouteden, Koen ×
Volodin, Alexander
Moorkens, Tom
Van Haesendonck, Chris #
Issue Date: Jun-2011
Publisher: Pergamon Press
Series Title: Carbon vol:49 issue:7 pages:2258-2263
Abstract: We demonstrate that graphene layers can be removed from atomically flat graphite terraces that are covered with deposited Co nanoparticles (NPs) using the tip of a scanning tunneling microscope. Peeling with monolayer resolution is achieved by scanning the NP covered graphite surface in close proximity. In this exfoliation process part of the lifted upper graphene layer is cut from this layer, while the surrounding part relaxes back to the underlying graphite surface. This gives rise to the appearance of spatially varying Moire patterns and to a modified electronic interaction with the underlying graphite, which is probed by scanning tunneling spectroscopy. NP assisted exfoliation provides a promising route for preparation of (few-layer) graphene under ultra-high vacuum conditions, ideally suited for high resolution scanning tunneling microscopy and spectroscopy based experiments. (C) 2011 Elsevier Ltd. All rights reserved.
ISSN: 0008-6223
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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