Classifying destructive quantum interference in molecular junctions: toward molecular quantum rulers
- Destructive quantum interference in molecular junctions might be used to build molecular quantum rulers, allowing us to quantify changes in external control parameters electrically. For this reason, it is important to understand which patterns of destructive quantum interference can occur inside the electronic excitation gap of a molecule coupled to conducting electrodes. By considering a four-level model, we show that much more complex destructive quantum interference behavior can arise than expected for just two levels. We classify the destructive quantum interferences analytically and show that they may even occur in regions forbidden by the standard orbital rule for electron transport. Our results suggest that appropriate molecular design may indeed allow us to construct highly sensitive molecular quantum rulers.
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| Author: | Lukas KriegerORCiD, Gert-Ludwig IngoldORCiDGND, Fabian PaulyORCiDGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1234500 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/123450 |
| ISSN: | 0021-9606OPAC |
| ISSN: | 1089-7690OPAC |
| Parent Title (English): | Journal of Chemical Physics |
| Publisher: | American Institute of Physics (AIP) |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2025 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2025/07/10 |
| Volume: | 163 |
| Issue: | 2 |
| First Page: | 024707 |
| DOI: | https://doi.org/10.1063/5.0277769 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik I | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  CC-BY-NC 4.0: Creative Commons: Namensnennung - Nicht kommerziell (mit Print on Demand) |
