Patera, Laerte L. and Sokolov, Sophia and Low, Jonathan Z. and Campos, Luis M. and Venkataraman, Latha and Repp, Jascha (2019) Resolving the Unpaired-Electron Orbital Distribution in a Stable Organic Radical by Kondo Resonance Mapping. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 58 (32). pp. 11063-11067. ISSN 1433-7851, 1521-3773
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The adsorption geometry and the electronic structure of a Blatter radical derivative on a gold surface were investigated by a combination of high-resolution noncontact atomic force microscopy and scanning tunneling microscopy. While the hybridization with the substrate hinders direct access to the molecular states, we show that the unpaired-electron orbital can be probed with angstrom ngstrom resolution by mapping the spatial distribution of the Kondo resonance. The Blatter derivative features a peculiar delocalization of the unpaired-electron orbital over some but not all moieties of the molecule, such that the Kondo signature can be related to the spatial fingerprint of the orbital. We observe a direct correspondence between these two quantities, including a pronounced nodal plane structure. Finally, we demonstrate that the spatial signature of the Kondo resonance also persists upon noncovalent dimerization of molecules.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHEMICAL-STRUCTURE; ATOM; atomic force microscopy; molecular electronics; radicals; scanning tunneling microscopy; single-molecule studies |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Jascha Repp |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Apr 2020 05:42 |
| Last Modified: | 08 Apr 2020 05:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26800 |
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