Current-driven dynamics of chiral ferromagnetic domain walls.

  title={Current-driven dynamics of chiral ferromagnetic domain walls.},
  author={Satoru Emori and Uwe F. W. Bauer and Sung-Min Ahn and Eduardo Mart{\'i}nez and Geoffrey S D Beach},
  journal={Nature materials},
  volume={12 7},
In most ferromagnets the magnetization rotates from one domain to the next with no preferred handedness. However, broken inversion symmetry can lift the chiral degeneracy, leading to topologically rich spin textures such as spin spirals and skyrmions through the Dzyaloshinskii-Moriya interaction (DMI). Here we show that in ultrathin metallic ferromagnets sandwiched between a heavy metal and an oxide, the DMI stabilizes chiral domain walls (DWs) whose spin texture enables extremely efficient… CONTINUE READING
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