High resolution angle-resolved photoemission studies of the surface states on Al(111) and Al(001).
01 January 1985
High-resolution angle-resolved photoemission has been applied to study Al(111) and Al(001). Two new surface states at gamma and kappa of Al(111) have been observed and characterized. Their energy positions are in good accord with recent self- consistent calculations. The state at gamma is observed over a narrow range of photon energies near hv=53 eV. A simple model is presented which explains this observation and derives a rough estimate of the decay length of the surface state into the bulk.