Structural manipulation of the graphene/metal-interface with Ar+ irradiation
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2013
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Language
en
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Physical Review B, Volume 88, issue 15, pp. 1-5
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.Description
Keywords
81.05.ue, 68.37.Ef, 61.80.-x, 31.15.xv
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Citation
Åhlgren, E H, Hämäläinen, S, Lehtinen, O, Liljeroth, P & Kotakoski, J 2013, ' Structural manipulation of the graphene/metal-interface with Ar+ irradiation ', Physical Review B, vol. 88, no. 15, 155419, pp. 1-5 . https://doi.org/10.1103/PhysRevB.88.155419