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Tailoring the chirality of magnetic domain walls by interface engineering

Author

Listed:
  • Gong Chen

    (National Center for Electron Microscopy, Lawrence Berkeley National Laboratory)

  • Tianping Ma

    (State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University)

  • Alpha T. N’Diaye

    (National Center for Electron Microscopy, Lawrence Berkeley National Laboratory)

  • Heeyoung Kwon

    (Kyung Hee University)

  • Changyeon Won

    (Kyung Hee University)

  • Yizheng Wu

    (State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University)

  • Andreas K. Schmid

    (National Center for Electron Microscopy, Lawrence Berkeley National Laboratory)

Abstract

Contacting ferromagnetic films with normal metals changes how magnetic textures respond to electric currents, enabling surprisingly fast domain wall motions and spin texture-dependent propagation direction. These effects are attributed to domain wall chirality induced by the Dzyaloshinskii–Moriya interaction at interfaces, which suggests rich possibilities to influence domain wall dynamics if the Dzyaloshinskii–Moriya interaction can be adjusted. Chiral magnetism was seen in several film structures on appropriately chosen substrates where interfacial spin-orbit-coupling effects are strong. Here we use real-space imaging to visualize chiral domain walls in cobalt/nickel multilayers in contact with platinum and iridium. We show that the Dzyaloshinskii–Moriya interaction can be adjusted to stabilize either left-handed or right-handed Néel walls, or non-chiral Bloch walls by adjusting an interfacial spacer layer between the multilayers and the substrate. Our findings introduce domain wall chirality as a new degree of freedom, which may open up new opportunities for spintronics device designs.

Suggested Citation

  • Gong Chen & Tianping Ma & Alpha T. N’Diaye & Heeyoung Kwon & Changyeon Won & Yizheng Wu & Andreas K. Schmid, 2013. "Tailoring the chirality of magnetic domain walls by interface engineering," Nature Communications, Nature, vol. 4(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3671
    DOI: 10.1038/ncomms3671
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    Cited by:

    1. Jon Ander Arregi & Patricia Riego & Andreas Berger & Elena Y. Vedmedenko, 2023. "Large interlayer Dzyaloshinskii-Moriya interactions across Ag-layers," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Gong Chen & Colin Ophus & Alberto Quintana & Heeyoung Kwon & Changyeon Won & Haifeng Ding & Yizheng Wu & Andreas K. Schmid & Kai Liu, 2022. "Reversible writing/deleting of magnetic skyrmions through hydrogen adsorption/desorption," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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