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O: Fachverband Oberflächenphysik

O 30: Metal & Semiconductor substrates: Structure, epitaxy and growth – Poster

O 30.2: Poster

Montag, 9. März 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