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Magnetic Properties of Surfaces Investigated by Spin Polarized Electron Beams



Daniel T. Pierce


A spin-polarized electron beam incident on a ferromagnetic surface results in elastically an inelasticcally scattered electrons and in photons via radiative transitions. The spin-dependent intensities of each of these provide a sensitive measure of surgace magnetization. A comparison between low-temperature spin deviations at the surface and in the bulk is given; the variation follows the same power law with temperature but with a larger prefactor for the surface. The connection between surface electronic structure and surface magnetism and the changes in each induced by chemisorption have been studied by spin-polarized inverse photoemission. For oxygen and carbon monozide on Ni(110), a reduction of the Ni magnetic moment is found, rather than a decrease in exchange coupling and corresponding randomization of the alignment of the moments. Further, in the case of CO, the chemisorption interaction is nonlocal with one CO molecule eliminating on the average the magnetic moment of two Ni atoms.
Magnetic Properties of Low-Dimensional Systems
Publisher Info


Pierce, D. (1986), Magnetic Properties of Surfaces Investigated by Spin Polarized Electron Beams, Springer-Verlag, , [online], (Accessed July 16, 2024)


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Created January 1, 1986, Updated February 19, 2017