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STM tip-assisted engineering of molecular nanostructures: PTCDA islands on Ge(001):H surfaces
Amir A Ahmad Zebari1, Marek Kolmer1, Jakub S Prauzner-Bechcicki1
1Research Centre for Nanometer-scale Science and Advanced Materials (NANOSAM), Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Krakow, Poland.
Abstract:
Islands composed of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) molecules are grown on a hydrogen passivated Ge(001):H surface. The islands are studied with room temperature scanning tunneling microscopy and spectroscopy. The spontaneous and tip-induced formation of the top-most layer of the island is presented. Assistance of the scanning probe seems to be one of the factors that facilitate and speed the process of formation of the top-most layer.
