  The magnetic and surface properties of some transition metals have been
investigated through the tight-binding approximation including Coulomb
correlations. These surface properties are derived from a charge neutrality
rule restricted to the d-band leading to a charge distribution including sp
surface states in agreement with a Linear Muffin-Tin Orbital (LMTO)
calculation. This new approach describes the local magnetism, surface energies
and work functions without recourse to the total energy. Our investigation
focuses on fcc cobalt, bcc iron, fcc nickel and fcc platinum surfaces with an
exploration of fcc cobalt nanoparticles.
