We have measured STM movies to study the diffusion of individual vacancies in a self-assembled layer of a tetrathiafulvalene derivative (exTTF) on Au(111) at room
temperature. The diffusion is anisotropic, being faster along the compact direction of the molecular lattice. A detailed analysis of the anisotropic displacement distribution of the single vacancies shows that the relative abundance of double jumps (that is, the
collective motion of molecular dimers) with respect to single jumps is ...
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Collective Concerted Motion in a Molecular Adlayer Visualized through the Surface Diffusion of Is...
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