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Regensburg 2022 – scientific programme

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O: Fachverband Oberflächenphysik

O 55: Poster Wednesday: Organic Molecules at Surfaces 2

O 55.8: Poster

Wednesday, September 7, 2022, 18:00–20:00, P4

Vibrational quanta of single melamine on Cu(100) — •Rebecca Cizek, Nicolas Néel, and Jörg Kröger — TU Ilmenau

Melamine adopts an up-standing adsorption geometry on Cu(100) and can be tautomerized by the local injection of electron from the tip of a scanning tunneling microscope [1]. Here, we compare inelastic electron tunneling spectroscopy (IETS) of intact and tautomerized melamine. Two low-energy vibrational quanta are observed for both molecules. The tautomer exhibits an energy shift and enhancement of one of the excitations. These findings are moreover complemented by IETS and tautomerization of the deuterated molecule.

[1] R.-P. Wang et al., J. Phys. Chem. Lett. 12, 1961 (2021)

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