001041579 001__ 1041579
001041579 005__ 20250423202218.0
001041579 0247_ $$2doi$$a10.48550/ARXIV.2110.11449
001041579 037__ $$aFZJ-2025-02318
001041579 1001_ $$0P:(DE-HGF)0$$aMartinez-Castro, Jose$$b0$$eCorresponding author
001041579 245__ $$aDisentangling the Complex Electronic Structure of an Adsorbed Nanographene: Cycloarene C108
001041579 260__ $$barXiv$$c2021
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001041579 520__ $$aWe combine low-temperature scanning tunneling spectroscopy, CO functionalized tips and algorithmic data analysis to investigate the electronic structure of the molecular cycloarene C108 (graphene nanoring) adsorbed on a Au(111) surface. We demonstrate that CO functionalized tips enhance the visibility of molecular resonances, both in differential conductance spectra and in real-space topographic images without introducing spurious artifacts. Comparing our experimental data with ab-initio density functional theory reveals a remarkably precise agreement of the molecular orbitals and enables us to disentangle close-lying molecular states only separated by 50 meV at an energy of 2 eV below the Fermi level. We propose this combination of techniques as a promising new route for a precise characterization of complex molecules and other physical entities which have electronic resonances in the tip-sample junction.
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001041579 650_7 $$2Other$$aMesoscale and Nanoscale Physics (cond-mat.mes-hall)
001041579 650_7 $$2Other$$aFOS: Physical sciences
001041579 7001_ $$0P:(DE-HGF)0$$aBolat, Rustem$$b1
001041579 7001_ $$0P:(DE-HGF)0$$aFan, Qitang$$b2
001041579 7001_ $$0P:(DE-HGF)0$$aWerner, Simon$$b3
001041579 7001_ $$0P:(DE-Juel1)176199$$aArefi, Hadi$$b4$$ufzj
001041579 7001_ $$0P:(DE-Juel1)180950$$aEsat, Taner$$b5$$ufzj
001041579 7001_ $$0P:(DE-HGF)0$$aSundermeyer, Jörg$$b6
001041579 7001_ $$0P:(DE-Juel1)140276$$aWagner, Christian$$b7$$ufzj
001041579 7001_ $$0P:(DE-HGF)0$$aGottfried, J. Michael$$b8
001041579 7001_ $$0P:(DE-Juel1)128792$$aTemirov, Ruslan$$b9$$ufzj
001041579 7001_ $$0P:(DE-Juel1)174438$$aTernes, Markus$$b10$$eCorresponding author$$ufzj
001041579 7001_ $$0P:(DE-Juel1)128791$$aTautz, F. Stefan$$b11$$ufzj
001041579 773__ $$a10.48550/ARXIV.2110.11449
001041579 8564_ $$uhttps://arxiv.org/abs/2110.11449
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