Interfacial Dzyaloshinskii-Moriya Interaction of Collinear Antiferromagnets MnPt and NiO on W, Re, and Au

ORAL

Abstract

The interfacial Dzyaloshinskii-Moriya interaction (iDMI), which is found at the interface between a magnetic material and a heavy metal (HM), favors noncollinear spin configurations. The iDMI values have been calculated for the antiferromagnetic (AFM) materials MnPt and NiO in proximity with the heavy metals W, Re, and Au as a function of the thicknesses of both the AFM layer and the HM layer. The iDMI values of the MnPt-W and MnPt-Re heterolayers are comparable to those of the common ferromagnetic materials, and those of NiO-Au are approximately 7 times lower. The saturation magnetization, exchange stiffness, and magnetic anisotropy constants are also calculated as functions of layer thicknesses. These values will provide required input parameters for micromagnetic modelling of antiferromagnetic skyrmions.

Md. Rakibul Karim Akanda, In Jun Park, Roger K. Lake, arXiv:2007.11714.

*This work was supported as part of the Spins and Heat in Nanoscale Electronic Systems (SHINES) an Energy Frontier Research Center funded by U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award #DE-SC0012670 and used the Extreme Science and Engineering Discovery Environment (XSEDE), supported by National Science Foundation Grant No. ACI-1548562 and allocation ID TG-DMR130081.

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Presenters

  • Md. Rakibul Karim Akanda

    • University of California, Riverside

Authors

  • Md. Rakibul Karim Akanda

    • University of California, Riverside

  • In Jun Park

    • University of California, Riverside

  • Roger Lake

    • University of California, Riverside
    • Department of Electrical and Computer Engineering, University of California, Riverside, CA, USA.
    • Department of Electrical and Computer Engineering, University of California, Riverside