We experimentally study nanowire-shaped spin-Hall nano-oscillators based on nanometer-thick epitaxial films of Yttrium Iron Garnet grown on top of a layer of Pt. We show that, although these films are characterized by significantly larger magnetic damping in comparison with the films grown directly on Gadolinium Gallium Garnet, they allow one to achieve spin current-driven auto-oscillations at comparable current densities, which can be an indication of the better transparency of the interface to the spin current. These observations suggest a route for improvement of the flexibility of insulator-based spintronic devices and their compatibility with semiconductor technology.

中文翻译：

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在Pt上生长的超薄YIG中自旋霍尔诱导的自激振荡。

我们通过实验研究纳米线形的自旋霍尔纳米振荡器，该振荡器基于在Pt层上生长的钇铁石榴石的纳米厚外延膜。我们显示，尽管与直接在Ga镓镓石榴石上生长的薄膜相比，这些薄膜的特征在于显着更大的磁阻尼，但它们可以使人们在可比较的电流密度下实现自旋电流驱动的自激振荡，这可以说明这种现象。界面对自旋电流的透明度更高。这些观察结果提出了改进基于绝缘体的自旋电子器件的灵活性及其与半导体技术的兼容性的途径。