Manipulation of Dzyaloshinskii-Moriya interaction in Co/Pt multilayers with strain

N. S. Gusev; A. V. Sadovnikov; S. A. Nikitov; M. V. Sapozhnikov; O. G. Udalov

doi:10.1103/PhysRevLett.124.157202

Manipulation of Dzyaloshinskii-Moriya interaction in Co/Pt multilayers with strain

Materials Science 2020-04-22 v1 Mesoscale and Nanoscale Physics

Authors: N. S. Gusev , A. V. Sadovnikov , S. A. Nikitov , M. V. Sapozhnikov , O. G. Udalov

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Abstract

Interfacial Dzyaloshinskii-Moriya interaction (DMI) is experimentally investigated in Pt/Co/Pt multilayer films under strain. A strong variation (from 0.1 to 0.8 mJ/m $^2$ ) of the DMI constant is demonstrated at $\pm 0.1\%$ in-plane uniaxial deformation of the films. The anisotropic strain induces strong DMI anisotropy. The DMI constant perpendicular to the strain direction changes sign while the constant along the strain direction does not. Estimates are made showing that DMI manipulation with an electric field can be realized in hybrid ferroelectric/ferromagnetic systems. So, the observed effect opens the way to manipulate the DMI and eventually skyrmions with a voltage via a strain-mediated magneto-electric coupling.

Keywords

dzyaloshinskii-moriya interaction co/pd multilayers strain magneto-electric coupling skyrmions

Cite

@article{arxiv.2002.05042,
  title  = {Manipulation of Dzyaloshinskii-Moriya interaction in Co/Pt multilayers with strain},
  author = {N. S. Gusev and A. V. Sadovnikov and S. A. Nikitov and M. V. Sapozhnikov and O. G. Udalov},
  journal= {arXiv preprint arXiv:2002.05042},
  year   = {2020}
}

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5 pages, 5 figures

Manipulation of Dzyaloshinskii-Moriya interaction in Co/Pt multilayers with strain

Abstract

Keywords

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