Dependence of the adsorption height of graphenelike adsorbates on their dimensionality

Autor: Weiß, S., Gerbert, D., Hecht, S., Sokolowski, M., Tegeder, P., Soubatch, S., Tautz, F. S., Stein, A., Schenk, A. K., Yang, X., Brülke, C., Kremring, R., Feldmann, S., Posseik, Francois, Gille, M.
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Physical review / B 98(7), 075410 (2018). doi:10.1103/PhysRevB.98.075410
DOI: 10.1103/PhysRevB.98.075410
Popis: Comparing the adsorption heights of various graphene nanoribbons on Cu(111) and Au(111) surfaces to those of graphene and π-conjugated planar organic molecules, we observe that two-dimensional graphene adsorbs much further away from the surface than both one-dimensional graphene nanoribbons and π-conjugated planar molecules -- which represent zero-dimensional graphene flakes. We show that this is a direct consequence of the adsorbates' dimensionality. Our results provide invaluable insights into the interplay of Pauli repulsion, pushback effect and chemical interaction for graphene-like adsorbates of any dimensionality on metal surfaces.
Databáze: OpenAIRE