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Real space observation of current-induced magnetic domain wall displacement in Co/Ni nano-wire by photoemission
N Ohshima1, T Koyama, H Tanigawa
1NEC Corporation, 1120 Shimokuzawa, Chuo-ku, Sagamihara, Kanagawa, 252-5298, Japan.
Abstract:
Current-induced magnetic domain wall (DW) displacement in a Co/Ni nano-wire with perpendicular magnetic anisotropy was investigated in real space by photoemission electron microscopy (PEEM) for the first time. DW velocity determined from the PEEM observation was 40 m s(-1) for the current density of 2.5 × 10(12) A m(-2), which was consistent with the result obtained by the electrical measurement used in our previous reports.
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