The authors have performed first-principles calculations of the electronic structure of the unreconstructed metastable (1 x 1) Pt(001) surface using the surface embedded Green function method for a semi-infinite geometry. Their calculated work function of 5.9eV was in excellent agreement with experiment. Calculated surface state and surface resonance bands were compared with those found in angle-resolved photoemission experiments and earlier slab calculations. Analysis of the charge density at the surface showed an increase in sp bonding charge which led to a surface tension similar to that found on Au(001), and could help explain the (5 x 20) reconstruction.

The Surface Electronic Structure of (1 x 1) Pt(001). G.A.Benesh, L.S.G.Liyanage, J.C.Pingel: Journal of Physics - Condensed Matter, 1990, 2[46], 9065-76