THE ELECTRONIC-STRUCTURE OF BENZENE ADSORBED ON THIN FE(110) AND CO(0001) FILMS

Electronic and magnetic properties of condensed and chemisorbed benzene layers on cobalt(0001) and iron(110) surfaces have been determined by means of angle and spin resolving photoelectron spectroscopy. The ferromagnetic substrate was produced by evaporating iron and cobalt films on a W(110) crystal. Condensed benzene layers show a similar behavior as on other densely packed transition metal surfaces. Benzene chemisorbed on Fe/W(110) and Co/W(110) gives evidence for a molecular adsorption and no large differences of its electronic properties. A flat adsorption geometry of the ring and a C-3V symmetry could be demonstrated. Exchange splittings were observed neither for sigma orbitals nor for the sigma orbitals being responsible for the interaction between adsorbate and substrate.