Tunnel current noise spectra of spins in individual dimers of molecular radicals
- We report the detection of electron spin resonance (ESR) in individual dimers of the stable free radical 2,2,6,6tetramethyl-piperidine-1-oxyl (TEMPO). ESR is measured by the current fluctuations in a scanning tunneling microscope (ESR-STM method). The multipeak power spectra, distinct from macroscopic data, are assigned to dimers having exchange and Dzyaloshinskii-Moriya interactions in the presence of spin-orbit coupling. These interactions are generated in our model by interfering electronic tunneling pathways from tip to sample via the dimer???s two molecules. This is the first demonstration that tunneling via two spins is a valid mechanism of the ESR-STM method.
| Author details: | Yishay ManassenORCiD, Moamen JbaraORCiD, Michael Averbukh, Zion HazanORCiD, Carsten HenkelORCiDGND, Baruch HorovitzORCiD |
|---|---|
| DOI: | https://doi.org/10.1103/PhysRevB.105.235438 |
| ISSN: | 2469-9950 |
| ISSN: | 2469-9969 |
| Title of parent work (English): | Physical review : B, Condensed matter and materials physics |
| Publisher: | American Physical Society |
| Place of publishing: | College Park |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2022/06/28 |
| Publication year: | 2022 |
| Release date: | 2024/01/19 |
| Volume: | 105 |
| Issue: | 23 |
| Article number: | 235438 |
| Number of pages: | 9 |
| Funding institution: | ATTRACT initiative within the European Union's Horizon 2020 research and; innovation programme [777222]; Israel Science Foundation [2811/19];; Deutsche Forschungsgemeinschaft (DFG, Germany) [282981637]; Deutsche; Forschungsgemeinschaft through the DIP programme [Fo 703/2-1] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
