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| Home > Publications database > Disentangling the Complex Electronic Structure of an Adsorbed Nanographene: Cycloarene C108 |
| Home > Publications database > Disentangling the Complex Electronic Structure of an Adsorbed Nanographene: Cycloarene C108 |
| Preprint | FZJ-2025-02318 |
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2021
arXiv
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Please use a persistent id in citations: doi:10.48550/ARXIV.2110.11449
Abstract: We combine low-temperature scanning tunneling spectroscopy, CO functionalized tips and algorithmic data analysis to investigate the electronic structure of the molecular cycloarene C108 (graphene nanoring) adsorbed on a Au(111) surface. We demonstrate that CO functionalized tips enhance the visibility of molecular resonances, both in differential conductance spectra and in real-space topographic images without introducing spurious artifacts. Comparing our experimental data with ab-initio density functional theory reveals a remarkably precise agreement of the molecular orbitals and enables us to disentangle close-lying molecular states only separated by 50 meV at an energy of 2 eV below the Fermi level. We propose this combination of techniques as a promising new route for a precise characterization of complex molecules and other physical entities which have electronic resonances in the tip-sample junction.
Keyword(s): Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ; FOS: Physical sciences
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