Angle-resolved photoemission evidence for a Gd(0001) surface state

Abstract

From angle resolved photoemission we have observed a surface state on Gd(0001) near the Fermi energy in the vicinity of Γ in agreement with a recently calculated band structure. This surface state is of prominent character (Δ1) at Γ. The observation of this surface state can be correlated with the development of the gadolinium bulk band structure which occurs with increasing film thickness as gadolinium films are grown on W(110).