Low, Jonathan Z. and Kladnik, Gregor and Patera, Laerte L. and Sokolov, Sophia and Lovat, Giacomo and Kumarasamy, Elango and Repp, Jascha and Campos, Luis M. and Cvetko, Dean and Morgante, Alberto and Venkataraman, Latha (2019) The Environment-Dependent Behavior of the Blatter Radical at the Metal-Molecule Interface. NANO LETTERS, 19 (4). pp. 2543-2548. ISSN 1530-6984, 1530-6992
Full text not available from this repository. (Request a copy)Abstract
Stable organic radicals have potential applications for building organic spintronic devices. To fulfill this potential, the interface between organic radicals and metal electrodes must be well characterized. Here, through a combined effort that includes synthesis, scanning tunneling microscopy, X-ray spectroscopy, and single-molecule conductance measurements, we comprehensively probe the electronic interaction between gold metal electrodes and a benchtop stable radical-the Blatter radical. We find that despite its open-shell character and having a half-filled orbital close to the Fermi level, the radical is stable on a gold substrate under ultrahigh vacuum. We observe a Kondo resonance arising from the radical and spectroscopic signatures of its half-filled orbitals. By contrast, in solution-based single-molecule conductance measurements, the radical character is lost through oxidation with charge transfer occurring from the molecule to metal. Our experiments show that the stability of radical states can be very sensitive to the environment around the molecule.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ORGANIC RADICALS; THIN-FILMS; PARAMAGNETIC CHARACTER; ELECTRONIC-STRUCTURE; Organic spintronics; organic radicals; Blatter radical; spinterface; Kondo resonance; single-molecule junctions |
| 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: | 15 Apr 2020 12:02 |
| Last Modified: | 15 Apr 2020 12:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27241 |
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