Spectral Density Of Surface States: Clean W(001) Surface

The transfer matrix approach is applied to calculate the spectral density of electronic states for the W(001) surface. We use a tight-binding hamiltonian with a nine function basis: 6s, 6p and 5d. Results for k points along the Σ and {up triangle, open} symmetry lines are presented for occupied states. Both surface and bulk features of the spectral density are in good agreement with angularly resolved photoemission spectra. © 1978.256401403Willis, Feuerbacher, Fitton, (1976) Solid State Commun., 18, p. 1315Plummer, Gadzuk, (1970) Phys. Rev. Lett., 25, p. 1493Feder, Sturm, (1975) Phys. Rev., 12 B, p. 537Kasowski, (1975) Solid State Commun., 17, p. 179Desjonqueres, Cyrot-Lackmann, On the surface states of MO and W (1976) Journal of Physics F: Metal Physics, 6, p. 567Smith, Mattheiss, (1976) Phys. Rev. Lett., 37, p. 1495Gonçalves Da Silva, Laks, Spectral densities for electronic surface states (1977) Journal of Physics C: Solid State Physics, 10, p. 851LAKS B. and GONÇALVES DA SILVA C.E.T., Surf. Sci. (to be published)Chakraborty, Pickett, Allen, (1976) Phys. Rev., 14 B, p. 3227Willis, Feuerbacher, Christensen, (1977) Phys. Rev. Lett., 38, p. 108