Dresden 2026 – scientific programme
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O: Fachverband Oberflächenphysik
O 30: Metal & Semiconductor substrates: Structure, epitaxy and growth – Poster
O 30.2: Poster
Monday, March 9, 2026, 18:00–20:00, P2
Structure of Standing Tetracyanoethylene Molecules on Cu(111) and Cu(100) — •Lorenz Brill1, Jonas Brandhoff1, Christoph Wachter2, Roman Forker1, Oliver T. Hofmann2, and Torsten Fritz1 — 1Friedrich Schiller University Jena, Germany — 2Graz Universtiy of Technology, Austria
Tetracyanoethylene (TCNE) has been predicted to go through a standing-lying transition on Cu(111) depending on the deposition conditions. However, only disordered growth with a mix of standing and lying molecules has been observed in the past. Here, we present the first evidence of well ordered structures of standing TCNE molecules grown on Cu(111) and Cu(100), observed by low energy electron diffraction and scanning tunneling microscopy. We compare the obtained structures to predictions calculated in thermodynamic equilibrium.
Keywords: STM; LEED; Molecular Growth; Epitaxy