畴壁自旋扭矩仪
The domain wall spin torque-meter
摘要：
我们报道了畴壁自旋力矩的非绝热分量的直接测量。我们的方法是独立的钉扎的畴壁线以及吉尔伯特阻尼参数。我们表明，非绝热和绝热组件之间的比率可以高达1，并解释这个高值的自旋翻转率的非绝热扭矩的重要性。除了它们的基本意义之外，这些结果通过展示自旋力矩效率的显着增加而为应用开辟了道路。
英文摘要：
We report the direct measurement of the non-adiabatic component of the spin-torque in domain walls. Our method is independent of both the pinning of the domain wall in the wire as well as of the Gilbert damping parameter. We demonstrate that the ratio between the non-adiabatic and the adiabatic components can be as high as 1, and explain this high value by the importance of the spin-flip rate to the non-adiabatic torque. Besides their fundamental significance these results open the way for applications by demonstrating a significant increase of the spin torque efficiency.
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