| Autor: |
Trishin, Sergey, Lotze, Christian, Richter, Johanna, Reecht, Gael, Krane, Nils, Rietsch, Philipp, Eigler, Siegfried, Franke, Katharina J. |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Phys. Stat. Sol. A, 2300105 (2023) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1002/pssa.202300105 |
| Popis: |
Electrostatic potentials strongly affect molecular energy levels and charge states, providing the fascinating opportunity of molecular gating. Their influence on molecular vibrations remains less explored. Here, we investigate Ethyl-Diaminodicyanoquinone molecules on a monolayer of MoS$_2$ on Au(111) using scanning tunneling and atomic force microscopy and spectroscopy. These molecules exhibit a large dipole moment in gas phase, which we find to (partially) persist on the MoS$_2$ monolayer. The self-assembled structures consist of chains, where the dipoles of neighboring molecules are aligned anti-parallel. Thanks to the decoupling efficiency of the molecular states from the metal by the MoS$_2$ interlayer, we resolve vibronic states of the molecules, which vary in intensity depending on the molecular surrounding. We suggest that the vibrations are strongly damped by electrostatic interactions with the environment. |
| Databáze: |
arXiv |
| Externí odkaz: |
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