High-resolution scanning tunneling microscopy imaging of mesoscopic graphene sheets on an insulating surface
Stolyarova E, Rim K, Ryu S, Maultzsch J, Kim P, Brus LE, Heinz TF, Hybertsen M, Flynn GW (2007)
Publication Status: Published
Publication Type: Journal article
Publication year: 2007
Journal
Publisher: NATL ACAD SCIENCES
Book Volume: 104
Pages Range: 9209-9212
Journal Issue: 22
Open Access Link: https://arxiv.org/abs/0705.0833
Abstract
We present scanning tunneling microscopy (STM) images of singlelayer graphene crystals examined under ultrahigh vacuum conditions. The samples, with lateral dimensions on the micrometer scale, were prepared on a silicon dioxide surface by direct exfoliation of crystalline graphite. The single-layer films were identified by using Raman spectroscopy. Topographic images of single-layer samples display the honeycomb structure expected for the full hexagonal symmetry of an isolated graphene monolayer. The absence of observable defects in the STM images is indicative of the high quality of these films. Crystals composed of a few layers of graphene also were examined. They exhibited dramatically different STM topography, displaying the reduced threefold symmetry characteristic of the surface of bulk graphite.
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APA:
Stolyarova, E., Rim, K., Ryu, S., Maultzsch, J., Kim, P., Brus, L.E.,... Flynn, G.W. (2007). High-resolution scanning tunneling microscopy imaging of mesoscopic graphene sheets on an insulating surface. Proceedings of the National Academy of Sciences of the United States of America, 104(22), 9209-9212. https://doi.org/10.1073/pnas.0703337104
MLA:
Stolyarova, Elena, et al. "High-resolution scanning tunneling microscopy imaging of mesoscopic graphene sheets on an insulating surface." Proceedings of the National Academy of Sciences of the United States of America 104.22 (2007): 9209-9212.
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