Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 48: Poster: 2D Materials beyond Graphene: TMDCs, Silicene and Relatives

O 48.17: Poster

Dienstag, 13. März 2018, 18:15–20:30, Poster A

Interaction of slow highly charged ions with 2D materials — •Sascha Creutzburg¹, Janine Schwestka², Tibor Lehnert³, Robert Leiter³, Arkady V. Krasheninnikov¹, Roland Kozubek⁴, René Heller¹, Stefan Facsko¹, Ute Kaiser³, Marika Schleberger⁴, Friedrich Aumayr², and Richard A. Wilhelm^1,2 — ¹Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research — ²TU Wien, Institute of Applied Physics — ³Ulm University, Central Facility of Electron Microscopy — ⁴University Duisburg-Essen, Faculty of Physics and CENIDE

The neutralisation of highly charged ions (HCIs) upon impact on a solid surface occurs within a timescale smaller than about 10 fs [1,2]. Recently, freestanding 2D layers became available and their utilization for transmission studies of HCIs makes a more detailed investigation of the neutralisation mechanisms possible. The charge exchange of HCIs transmitted through single layer graphene [1] and carbon nanomembranes [3] was investigated by means of an electrostatic analyser. Additionally, the ion stopping is measured and the kinetic energy loss depends strongly on charge exchange. In this contribution the transmission measurements are extended to 2D materials beyond graphene, i.e. MoS₂ and hBN.

[1] E. Gruber et al., Nat. Commun. 7, 13948 (2016).

[2] R. A. Wilhelm et al., Phys. Rev. Lett. 119, 103401 (2017).

[3] R. A. Wilhelm et al., Phys. Rev. Lett. 112, 153201 (2014).