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

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.

5 pages, 5 figures

References in corpus (2)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Direct observation of the Dzyaloshinskii-Moriya interaction in a Pt/Co/Ni film

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