On the possibility of observation of electronic states of metallic atomic wire on Ni(001) surface with angle-resolved photoemission

Abstract

The possibility of the observation of the one-dimensional electronic state on a metallic atomic wire on a metallic surface by using the angle-resolved photoelectron spectrum is investigated. The ARUPS program of the one-step model with the layer KKR method has been used where the so-called ‘6 eV satellite’ is excluded because it is out of the scope of this calculation. The muffin-tin potentials we used were produced using the self-consistent full-potential LMTO method. Nickel atomic wires on a nickel(001) surface have been considered as an example of the atomic wire. A peak about 6 eV below the Fermi level was observed in our calculated spectra. This peak has dispersion only along the direction of the atomic wire and has had no interaction with other atomic wires. Thus, the peak is identified as an isolated one-dimensional electronic state on the atomic wire. The result can be applied to any metallic surfaces.