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RESEARCH PRODUCT
Binding Behavior of Carbonmonoxide to Gold Atoms on Ag(001)
Hannu HäkkinenKaroliina HonkalaNisha MammenDavid KuhnessHyun Jin YangWolf-dieter SchneiderHans-joachim FreundMarkus HeydeJagriti Palsubject
Materials scienceDiffusionAg(001)02 engineering and technology01 natural sciencesCatalysiskultaCatalysislaw.inventionMetalAdsorptionlaw0103 physical sciencesMoleculeAu010306 general physicsInelastic electron tunneling spectroscopyGeneral Chemistry021001 nanoscience & nanotechnology3. Good healthCOCrystallographyadsorptionvisual_artvisual_art.visual_art_mediumDensity functional theoryScanning tunneling microscope0210 nano-technologyadsorptiodescription
AbstractThe adsorption behavior of single CO molecules at 4 K bound to Au adatoms on a Ag(001) metal surface is studied with scanning tunneling microscopy (STM) and inelastic electron tunneling spectroscopy (IETS). In contrast to earlier observations two different binding configurations are observed—one on top of a Au adatom and the other one adsorbed laterally to Au on Ag(001). Moreover, IETS reveals different low-energy vibrational energies for the two binding sites as compared to the one for a single CO molecule bound to Ag(001). Density functional theory (DFT) calculations of the adsorption energies, the diffusion barriers, and the vibrational frequencies of the CO molecule on the different binding sites rationalize the experimental findings.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-11-01 |