Welker, Joachim and Giessibl, Franz J. (2012) Revealing the Angular Symmetry of Chemical Bonds by Atomic Force Microscopy. SCIENCE, 336 (6080). pp. 444-449. ISSN 0036-8075, 1095-9203
Full text not available from this repository. (Request a copy)Abstract
We have measured the angular dependence of chemical bonding forces between a carbon monoxide molecule that is adsorbed to a copper surface and the terminal atom of the metallic tip of a combined scanning tunneling microscope and atomic force microscope. We provide tomographic maps of force and current as a function of distance that revealed the emergence of strongly directional chemical bonds as tip and sample approach. The force maps show pronounced single, dual, or triple minima depending on the orientation of the tip atom, whereas tunneling current maps showed a single minimum for all three tip conditions. We introduce an angular dependent model for the bonding energy that maps the observed experimental data for all observed orientations and distances.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SCANNING-TUNNELING-MICROSCOPY; ELECTRONIC-STRUCTURE; GIANT CORRUGATIONS; SURFACE; RESOLUTION; MOLECULES; CO; SPECTROSCOPY; MANIPULATION; SILICON; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 May 2020 10:21 |
| Last Modified: | 14 May 2020 10:21 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18868 |
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