Graphene on ferromagnetic surfaces and its functionalization with water and ammonia

TL;DR

This study investigates how water and ammonia molecules interact with graphene on Ni(111) surfaces using spectroscopy and computational methods, revealing interface states and hybridization effects.

Contribution

It provides new insights into molecule-graphene interactions on ferromagnetic surfaces through combined experimental and theoretical analysis.

Findings

Identification of interface states from hybridization

Interaction details between molecules and graphene/Ni(111)

Comparison of experimental data with DFT results

Abstract

Here we present an angle-resolved photoelectron spectroscopy (ARPES), x-ray absorption spec-troscopy (XAS), and density-functional theory (DFT) investigations of water and ammonia ad-sorption on graphene/Ni(111). Our results on graphene/Ni(111) reveal the existence of interface states, originating from the strong hybridization of the graphene {\pi} and spin-polarized Ni 3d valence band states. ARPES and XAS data of the H2O (NH3)/graphene/Ni(111) system give an information about the kind of interaction between adsorbed molecules and graphene on Ni(111). The presented experimental data are compared with the results obtained in the framework of the DFT approach.