SKM 2023 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 5: Focus Session: Ion Beam Interaction with Surfaces and 2D Materials I
O 5.7: Vortrag
Montag, 27. März 2023, 12:30–12:45, GER 38
Spectroscopic and microscopic analysis of ion-induced modifications in 2D materials — •Carolin Frank1, Lucia Skopinski1, Lars Breuer1, Jennifer Schmeink1, Lukas Kalkhoff1, Stephan Sleziona1, Ulrich Hagemann2, and Marika Schleberger1 — 1University of Duisburg-Essen, Faculty of Physics and CENIDE, 47057 Duisburg, Germany — 2University of Duisburg-Essen, CENIDE, ICAN, 47057 Duisburg, Germany
In this contribution we present results concerning modifications induced by xenon- and gold-ions in two-dimensional molybdenum disulfide exfoliated on gold including Raman spectroscopy, X-ray photoelectron spectroscopy and friction force microscopy. Irradiations at the target station HICS, located at the University of Duisburg-Essen, as well as at the target stations MSS@CRYRING and M1-Branch, both located at the GSI Helmholtzzentrum für Schwerionenforschung, were implemented with slow, highly charged ions as well as with swift heavy ions, which differ from each other regarding their charge state and their kinetic energy.
A focus will be given to the impact of both the kinetic and potential energy of the ions on modifications of the molybdenum disulfide and also on the size of ion-induced defects. Based on the results of friction force microscopy it is shown for the first time that the impact of the potential energy of the swift ions regarding generation of defects in 2D materials is significantly larger than the impact of the kinetic energy. Additionally, results regarding interaction between the gold substrate and the molybdenum disulfide will be discussed.