The magnetic properties of NO overlayers on a variety of ferromagnetic
and paramagnetic (100) metal surfaces are calculated within the local
-spin-density approximation. Bridge-site adsorption results in negligi
ble spin densities in all cases on Rh, Pd, and Pt, and strongly suppre
sses the surface magnetic moments of Ni. Atop-site adsorption yields m
ore complicated behavior, including residual NO magnetic moments on Pd
(100) monolayers and induced ferromagnetism on thicker Pd and Pt slab
s.