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Charge transport in a single molecule transistor probed by scanning tunneling microscopy.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bouvron, Samuel Maurand, Romain Graf, Alexander Erler, Philipp Gragnaniello, Luca Skripnik, Maxim Wiedmann, Dirk Engesser, Clara Nef, Cornelia Fu, Wangyang Schoenenberger, Christian Pauly, Fabian Fonin, Mikhail |
| Copyright Year | 2018 |
| Abstract | We report on the scanning tunneling microscopy/spectroscopy (STM/STS) study of cobalt phthalocyanine (CoPc) molecules deposited onto a back-gated graphene device. We observe a clear gate voltage (Vg) dependence of the energy position of the features originating from the molecular states. Based on the analysis of the energy shifts of the molecular features upon tuning Vg, we are able to determine the nature of the electronic states that lead to a gapped differential conductance. Our measurements show that capacitive couplings of comparable strengths exist between the CoPc molecule and the STM tip as well as between CoPc and graphene, thus facilitating electronic transport involving only unoccupied molecular states for both tunneling bias polarities. These findings provide novel information on the interaction between graphene and organic molecules and are of importance for further studies, which envisage the realization of single molecule transistors with non-metallic electrodes. |
| Starting Page | 1487 |
| Ending Page | 1493 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 29303194 |
| Journal | Medline |
| Volume Number | 10 |
| Issue Number | 3 |
| Alternate Webpage(s) | http://kops.uni-konstanz.de/bitstream/handle/123456789/41100/Bouvron_2-1gtcax5t6rscc3.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://doi.org/10.1039/c7nr06860c |
| Journal | Nanoscale |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
