High-resolution inverse-photoemission study of a clean and an oxidized Ag-Mn(111) random substitutional alloy

We have studied the unoccupied electronic band structure in Ag"15 at. % Mn(111). Minority-spin Mn states appear at 1.7±0.1 eV above the Fermi level EF with a full width at half maximum of 1.7 eV. They show no dispersion. An image-potential state is resolved at 0.74±0.08 eV below Evac. On exposure to oxygen, new empty states appear at 2.9 eV above EF. © 1986 The American Physical Society.