Regensburg 2025 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 31: Focus Session Molecular Nanostructures on Surfaces: On-Surface Synthesis and Single-Molecule Manipulation II
O 31.7: Vortrag
Dienstag, 18. März 2025, 12:15–12:30, H24
Manipulation of a CO molecule on a copper surface with lateral force microscopy — •Norio Okabayashi1, Alfred. J. Weymouth2, Shinjae Nam2, Sophia Schweiss2, Thomas Frederiksen3,4, and Franz J. Giessibl2 — 1School of Mathematics and Physics, Kanazawa University — 2Institute of Experimental and Applied Physics, University of Regensburg — 3Donostia International Physics Center — 4IKERBASQUE, Basque Foundation for Science
The manipulation of a single molecule on a surface by scanning tunneling microscopy (STM) and atomic force microscopy (AFM) has been intensively studied because of its relation to friction research. Recently, we have studied the manipulation process for CO on a Cu(110) surface with AFM, STM and density functional theory [1][2]. We found that at the tip height for the beginning of the manipulation, CO is manipulated from the top to the neighboring top site by transiently using the bridge site, but for lower tip heights, the manipulation occurs from the top to the bridge site and then from the bridge to the neighboring top site. Here, we have extended our experimental technique by incorporating lateral force microscopy, where the tip oscillates laterally [3], to directly observe the energy dissipation during manipulation. Indeed, the observation confirms the validity of our previous claim. This result paves the way for quantitative evaluation of dynamic friction during manipulation. [1] N. Okabayashi, T. Frederiksen, A. Liebig, F. J. Giessibl, Phys. Rev. Lett. 131 (2023) 148001, [2] N. Okabayashi, T. Frederiksen, A. Liebig, F. J. Giessibl, Phys. Rev. B 108 (2023) 165401, [3] A. J. Weymouth, J. Phys.: Condens. Matter 29 (2017).
Keywords: Manipulation; Energy dissipation; Friction; Lateral force microscopy; Atomic force microscopy