Constant-energy surfaces of nickel near the Fermi energy: An angle-resolved ultraviolet photoemission study on Ni(110)

Abstract

Room temperature ultraviolet photoemission data taken with high angular and energy resolution from Ni(110) are presented. Recording the total photoelectron intensity in a small energy window near the Fermi energy (E F) on a polar scan along the [1 1 0] azimuth allows to clearly distinguish several bands, and in particular an exchange-split sp-band, by their different positions in k-space. Moreover, we present six two-dimensional cuts through k-space obtained by extended angular scanning at different electron binding energies at and near E F. Well defined lines in these maps can be clearly assigned to minority and majority sp- and d-bands and their location in k-space can be determined accurately thus providing sections through their constant-energy surfaces.