Interface magnetocrystalline anisotropy induced by charge transfer on Pd/Ni/Cu films

ORAL

Abstract

We investigated microscopic mechanisms of interface magnetocrystalline anisotropy in epitaxial Pd/Ni/Cu films using x-ray magnetic circular dichroism and x-ray absorption spectroscopy at Ni $L_{\rm 2;3}$ edge and Pd $M_{\rm 2;3}$ edge. We found that a considerably charge transfer (from 4$d$ to 3$d$) of Pd and Ni dominantly occurs near the interface of Pd/Ni. The interfacial charge transfer result is enhanced the orbital magnetic moment, and leads to the interface magnetocrystalline anisotropy induced by about 19.1$\%$.

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Authors

  • J.-S. Lee

    • eSSC and Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea

  • J.-Y. Kim

    • Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Korea
    • PLS

  • B.H. Seung

  • J.-H. Park

    • POSTECH/PLS

  • K.-B. Lee

    • eSSC and Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea
    • POSTECH
    • eSSC and Dept. of Physics, Pohang University of Science and Technology, Pohang, 790-784, South Korea