We report on the Dzyaloshinskii-Moriya (DMI) interaction at the interface between a ferromagnet and an oxide. We demonstrate experimentally that oxides can give rise to DMI. By comparison of systems comprised of $\mathrm{Pt}/\mathrm{C}{\mathrm{o}}_{90}\mathrm{F}{\mathrm{e}}_{10}$/oxide and $\mathrm{Cu}/\mathrm{C}{\mathrm{o}}_{90}\mathrm{F}{\mathrm{e}}_{10}$/oxide, we also show how oxidation of one interface can enhance and add to the total DMI of that generated by the Pt interface. This is due to the fact that the DMI on both interfaces promotes left-handed chirality. Finally, by use of ferromagnetic resonance spectroscopy, we show that the DMI and the spectroscopic splitting factor, which is a measure of the orbital momentum, are correlated. This indicates the importance of hybridization and charge transfer at the oxide interface for the DMI.

中文翻译：

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Dzyaloshinskii-Moriya相互作用与氧化物-铁磁体界面的轨道角动量之间的相关性

我们报告了铁磁体和氧化物之间的界面处的Dzyaloshinskii-Moriya（DMI）相互作用。我们通过实验证明了氧化物会引起DMI。通过比较组成的系统$铂/\mathrm{C}{\mathrm{Ø}}_{90}\mathrm{F}{\mathrm{Ë}}_{10}$/氧化物和 $铜/\mathrm{C}{\mathrm{Ø}}_{90}\mathrm{F}{\mathrm{Ë}}_{10}$/氧化物，我们还展示了一个界面的氧化如何增强并添加到Pt界面生成的DMI的总DMI中。这是由于两个接口上的DMI都提高了左手性。最后，通过使用铁磁共振光谱，我们表明DMI和光谱分裂因子是轨道动量的度量，是相关的。这表明在DMI的氧化物界面进行杂交和电荷转移的重要性。