论文标题
与菌株的CO/PT多层相互作用的Dzyaloshinskii-Moriya相互作用的操纵
Manipulation of Dzyaloshinskii-Moriya interaction in Co/Pt multilayers with strain
论文作者
论文摘要
界面Dzyaloshinskii-Moriya相互作用（DMI）在菌株下的PT/CO/PT多层膜中进行了实验研究。 DMI常数的强烈变化（从0.1至0.8 MJ/m $^2 $）以$ \ pm 0.1 \％$ $ 0.1 \％$的平面单轴变形为单位变形。各向异性菌株诱导强大的DMI各向异性。 DMI常数垂直于应变方向变化，而沿应变方向的常数则没有。进行估计表明，用电场的DMI操纵可以在混合铁电/铁磁系统中实现。因此，观察到的效果开辟了通过应变介导的磁电耦合来操纵DMI并最终用电压进行空中的方法。
Interfacial Dzyaloshinskii-Moriya interaction (DMI) is experimentally investigated in Pt/Co/Pt multilayer films under strain. A strong variation (from 0.1 to 0.8 mJ/m$^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.
