Role of the intrinsic surface state in the decay of image states at a metal surface
Role of the intrinsic surface state in the decay of image states at a metal surface
The role of the intrinsic surface state $(n=0)$ in the decay of the first image state $(n=1)$ at the (111) surface of copper is investigated. Inelastic linewidths are evaluated from the knowledge of the imaginary part of the electron self energy, which we compute, within the GW approximation of the …