한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)

한국진공학회 (The Korean Vacuum Society)
권호 표지

ARPES study of Ultrathin Fe Grown on Cu (001) surface

  • Poornima, L. (Center for Nano-imaging technology, Korea research institute of Standards and Science) ;
  • Oh, Y.R. (Center for Nano-imaging technology, Korea research institute of Standards and Science) ;
  • Park, Y.S. (Center for Nano-imaging technology, Korea research institute of Standards and Science) ;
  • Kim, W. (Center for Nano-imaging technology, Korea research institute of Standards and Science) ;
  • Kim, C.G. (Department of Material Science and Engineering, Chungnam National University) ;
  • Hong, J. (Department of Physics, Pukyung National University) ;
  • Hwang, Chan-Yong (Center for Nano-imaging technology, Korea research institute of Standards and Science)
  • 발행 : 2011.02.09
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초록

The spin structure of Fe over layers on Cu (001), especially in region II is one of the unsolved problem for many years. We study the out - of - plane (OP) Fermi surfaces (FSs) of 7 monolayer Fe/Cu (001) films using angle resolved photo emission spectroscopy (ARPES). Ultrathin Fe was grown on Cu (001) substrate at room temperature and the experimental measurements were carried out at room temperature and low temperature. Fermi surfaces measured about $\frac{1}{4}$ of the Brillouin Zone (BZ) using photon energies ranging from 170 eV to 280 eV. Our results confirmed that ferromagnetic signal at 7 ML Fe on Cu (001) is nearly zero. These results are consistent with our recent x-ray magnetic circular dichroism (XMCD) and surface magneto - optic Kerr effect (SMOKE) experiments. Based on our observations we have made a simple model of this system, which explains all the experimental results.

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