Dresden 2026 – scientific programme
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O: Fachverband Oberflächenphysik
O 45: Organic molecules on inorganic substrates: Adsorption and growth – Poster
O 45.1: Poster
Tuesday, March 10, 2026, 14:00–16:00, P2
Domain mixing of coronene and nonahelicene with CuOx species on Cu(110) — •Max Halbauer, Martin Wolf, and Akitoshi Shiotari — Fritz-Haber-Institute, Faradayweg 4-6, 14195 Berlin, Germany
Various surfaces are known to reconstruct as a result of surface energy minimization (e.g. Pt(110)-(2×1), Si(111)-(7×7)). For certain systems, the surface reconstruction is induced by the adsorption of molecules or atoms (e.g. C60/Cu(111) [1]). In this work, we show how the organic molecules, coronene and nonahelicene, interrupt the growth of copper oxide rows of the typical Cu(110)-p(2×1)O reconstruction and mediate the formation of mixed domains instead. The resulting adlayer domains on Cu(110) were imaged by scanning tunneling microscopy (STM) and non-contact atomic force microscopy (NC-AFM) under ultrahigh vacuum and cryogenic conditions. Models for the adsorption structures of the molecules and CuOx species are discussed and confirmed with simulated images. A mechanism for the mixed domain growth is proposed, whereby surface diffusion and favourable lateral interactions between the molecules and oxide species drive the formation of the observed coordination framework. The finding opens prospects for controlling the lateral chemical and electronic interactions between adsorbed molecules by partial oxidation of the Cu(110) surface.
[1] L. Forcieri, S. P. Jarvis, et.al., Phys. Rev. B 2021, 104, 205428.
Keywords: domain mixing; noncontact atomic force microscopy; polycyclic aromatic hydrocarbon; adsorption structure; surface diffusion