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Large interlayer Dzyaloshinskii-Moriya interactions across Ag-layers

Author

Listed:
  • Jon Ander Arregi

    (CIC nanoGUNE BRTA)

  • Patricia Riego

    (CIC nanoGUNE BRTA
    Universidad del País Vasco, UPV/EHU)

  • Andreas Berger

    (CIC nanoGUNE BRTA)

  • Elena Y. Vedmedenko

    (Universität Hamburg)

Abstract

Seeking to enhance the strength of the interlayer Dzyaloshinskii-Moriya interaction (IL-DMI) through a combination of atomic and Rashba type spin-orbit coupling (SOC) we studied the strength and the thickness evolution of effective interlayer coupling in Co/Ag/Co trilayers by means of surface sensitive magneto-optical measurements that take advantage of the light penetration depth. Here, we report the observation of oscillatory, thickness-dependent chiral interaction between ferromagnetic layers. Despite the weakness of the Ag atomic SOC, the IL-DMI in our trilayers is orders of magnitude larger than that of known systems using heavy metals as a spacer except of recently reported −0.15 mJ/m2 in Co/Pt/Ru(t)/Pt/Co and varies between ≈ ±0.2 mJ/m2. In contrast to known multilayers Co/Ag/Co promotes in-plane chirality between magnetic layers. The strength of IL-DMI opens up new routes for design of three-dimensional chiral spin structures combining intra- and interlayer DMI and paves the way for enhancements of the DMI strength.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42426-9
    DOI: 10.1038/s41467-023-42426-9
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    References listed on IDEAS

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    1. 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.
    2. Jaehun Cho & Nam-Hui Kim & Sukmock Lee & June-Seo Kim & Reinoud Lavrijsen & Aurelie Solignac & Yuxiang Yin & Dong-Soo Han & Niels J. J. van Hoof & Henk J. M. Swagten & Bert Koopmans & Chun-Yeol You, 2015. "Thickness dependence of the interfacial Dzyaloshinskii–Moriya interaction in inversion symmetry broken systems," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    3. Jiayu Li & Qiushi Yao & Lin Wu & Zongxiang Hu & Boya Gao & Xiangang Wan & Qihang Liu, 2022. "Designing light-element materials with large effective spin-orbit coupling," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
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