SURFACE-STATE CONTRIBUTION TO THE MAGNETIC-MOMENT OF NI(111)

Spin-resolved inverse photoemission measurements on Ni(111) reveal a c rystal-induced surface state close to the Fermi level that is partly o ccupied around the GAMMABAR point of the surface Brillouin zone. This finding together with an observed splitting of about 100 meV between s pin-up and spin-down states identifies this state as a truly magnetic state contributing to the surface magnetic moment of Ni(111). A photon polarization analysis shows that the state has LAMBDA1 symmetry at GA MMABAR, therefore being derived from the p-like L2' bulk state.