论文标题
缩放铁磁/重金属纳米结构中的自旋轨道磁性读数
Spin-orbit magnetic state readout in scaled ferromagnetic/heavy metal nanostructures
论文作者
论文摘要
有效检测纳米级尺寸的磁态是利用自旋逻辑设备进行计算的重要步骤。迄今已在磁性检测中使用了磁性效应，但它们具有能量不利的缩放率，并且不会产生可用于驱动逻辑设备应用的电路元件的电动力。在这里，我们通过实验表明，通过使用磁体的平面内磁性态旋转式磁性，可以使用有利的微型化定律。这种缩放定律使我们能够通过COFE/PT纳米结构中的自旋霍尔效应获得巨大的信号，并量化COFE/PT系统的有效自旋转换率。旋转电荷转换可以描述为具有内部电阻的电流源，即，它会产生可用于驱动计算电路的电动力。我们预测，磁态的自旋轨道检测可以在降低的尺寸下达到高效率，从而为可扩展的自旋轨道逻辑设备和记忆铺平了道路。
Efficient detection of the magnetic state at nanoscale dimensions is an important step to utilize spin logic devices for computing. Magnetoresistance effects have been hitherto used in magnetic state detection, but they suffer from energetically unfavorable scaling and do not generate an electromotive force that can be used to drive a circuit element for logic device applications. Here, we experimentally show that a favorable miniaturization law is possible via the use of spin-Hall detection of the in-plane magnetic state of a magnet. This scaling law allows us to obtain a giant signal by spin Hall effect in CoFe/Pt nanostructures and quantify an effective spin-to-charge conversion rate for the CoFe/Pt system. The spin-to-charge conversion can be described as a current source with an internal resistance, i.e., it generates an electromotive force that can be used to drive computing circuits. We predict that the spin-orbit detection of magnetic states can reach high efficiency at reduced dimensions, paving the way for scalable spin-orbit logic devices and memories.
