Surface State Contribution to the Magnetic Moment of Ni(111)

Spin-resolved inverse photoemission measurements on Ni(111) reveal a crystal-induced surface state close to the Fermi level that is partly occupied around the {Γ}{} point of the surface Brillouin Zone. This finding together with an observed splitting of about 100 meV between spin-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 hte state has Λ₁ symmetry at {Γ}{}, therefore being derived from the p-like L_2' bulk state. {} 1993 The American Physical Society