Electronic structure of silver (100)

Abstract

The electronic structure of silver (100) is calculated using the self-consistent local-orbital method. The work function is found to be 4.2 eV. A large density of surface states is obtained, comparable to that found for Ni(100), and larger than we found for Pd(100). ${\stackrel{\ensuremath{\rightarrow}}{\mathrm{k}}}_{\ensuremath{\parallel}}$-selected densities of states (DOS) are given for ${\stackrel{\ensuremath{\rightarrow}}{\mathrm{k}}}_{\ensuremath{\parallel}}$ along the $\overline{\ensuremath{\Gamma}}\ensuremath{-}\overline{X}[110]$ and $\overline{\ensuremath{\Gamma}}\ensuremath{-}\overline{M}[100]$ directions. A strong variation with ${\stackrel{\ensuremath{\rightarrow}}{\mathrm{k}}}_{\ensuremath{\parallel}}$ is found. Results for states which are even with respect to mirror-plane reflection are very different from those for states which are odd. Peaks in ${\stackrel{\ensuremath{\rightarrow}}{\mathrm{k}}}_{\ensuremath{\parallel}}$-selected DOS which are due to surface-state bands are identified.