Electronic structure of silver (100)

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). ${\overrightarrow{\mathrm{k}}}_{\parallel }$-selected densities of states (DOS) are given for ${\overrightarrow{\mathrm{k}}}_{\parallel }$ along the $\overline{\Gamma }-\overline{X}\mathrm{}\left[110\right]\mathrm{}$ and $\overline{\Gamma }-\overline{M}\mathrm{}\left[100\right]\mathrm{}$ directions. A strong variation with ${\overrightarrow{\mathrm{k}}}_{\parallel }$ 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 ${\overrightarrow{\mathrm{k}}}_{\parallel }$-selected DOS which are due to surface-state bands are identified.