Electronic structure and magnetic anisotropy of Co/Au(111): a spin-resolved photoelectron spectroscopy study

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Surface Magnetism, Other Ferromagnetic Metals And Alloys, Spin Arrangements In Magnetically Ordered Materials, Electron Sources, Polarized Beams

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The interest in epitaxial grown Co films and Co/Au multilayers are due to their peculiar magnetic properties such as oscillatory behavior of interlayer magnetic coupling and perpendicular magnetic anisotropy (PMA), etc. [1]. In Co/Au(111) system, a large lattice mismatch (ca. 14 %) between Co and Au(111) causes the characteristic growth mode of Co films, which were observed in detail by ion scattering, STM, LEED and AES experiments. The results suggest the close connection between the structure and electronic and hence magnetic properties of Co films at the interface. However, only a few works were devoted to directly observe the electronic structures of Co films on Au and their interfaces, so far. In this report, we present spin-and angle-resolved photoemission (SARPES) spectra of Co/Au(111) system in order to investigate the thickness dependence of the electronic and magnetic properties of Co films. .

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