Structural manipulation of the graphene/metal interface with Ar+ irradiation
- Author(s)
- E. H. Ahlgren, S. K. Hämäläinen, O. Lehtinen, P. Liljeroth, J. Kotakoski
- Abstract
Controlled defect creation is a prerequisite for the detailed study of disorder effects in materials. Here, we irradiate a graphene/Ir(111) interface with low-energy Ar+ to study the induced structural changes. Combining computer simulations and scanning-probe microscopy, we show that the resulting disorder manifests mainly in the forms of intercalated metal adatoms and vacancy-type defects in graphene. One prominent feature at higher irradiation energies (from 1 keV up) is the formation of linelike depressions, which consist of sequential graphene defects created by the ion channeling within the interface, much like a stone skipping on water. Lower energies result in simpler defects, down to 100 eV, where more than one defect in every three is a graphene single vacancy.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- Aalto University, Universität Ulm, University of Helsinki
- Journal
- Physical Review B
- Volume
- 88
- No. of pages
- 5
- ISSN
- 1098-0121
- Publication date
- 10-2013
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Keywords
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/88455386-b65a-4d6e-bb41-989934f74739