Energy-resolved photofield emission from the W(100) surface state

Publisher Website
Google Scholar
Abstract
Measurements of the photofield current emitted at energies below threshold (ħω<Φ) from the W(100) surface state clearly show for the first time initial-state structure in the final-state energy distributions obtained at these low photon energies. Analysis of data taken as a function of the polarization vector of the incident light shows that photoemission from the surface state is not strongly influenced by longitudinal components in the vector potential induced by the spatial variation of A→ near a metal surface.