铁磁共线多层磁振子自旋阀
Ferroic collinear multilayer magnon spin valve
摘要：
利用绝缘体中的纯磁振子自旋电流进行信息传输和处理是传统电荷电流驱动自旋电子器件的一种很有前途的替代方案。焦耳加热的情况下，以及减少自旋波阻尼绝缘铁磁体已被建议，使有效的逻辑器件的实施。在基于自旋波叠加的逻辑多数门的概念验证成功之后，需要更多的组件来执行复杂的逻辑运算。一个关键的组成部分是一个开关，对应于一个传统的磁阻自旋阀。在这里，我们报告的磁化取向依赖的自旋信号检测共线磁性多层膜自旋输运的磁振子自旋电流。我们发现在Y3 Fe 5 O 12 |CoO| Co三层薄膜中，探测到的自旋信号依赖于Y3 Fe 5 O 12和Co的相对取向。这表明在我们的系统中存在自旋阀行为，其效应幅度为120%。我们证明了这种效应的可靠性，并通过温度和功率相关的测量来研究起源，表明自旋整流效应和磁性层取向相关的自旋输运效应导致测量信号。
英文摘要：
Information transport and processing by pure magnonic spin currents in insulators is a promising alternative to conventional charge-current driven spintronic devices. The absence of Joule heating as well as the reduced spin wave damping in insulating ferromagnets has been suggested to enable the implementation of efficient logic devices. After the proof of concept for a logic majority gate based on the superposition of spin waves has been successfully demonstrated, further components are required to perform complex logic operations. A key component is a switch that corresponds to a conventional magnetoresistive spin valve. Here, we report on magnetization orientation dependent spin signal detection in collinear magnetic multilayers with spin transport by magnonic spin currents. We find in Y3Fe5O12|CoO|Co tri-layers that the detected spin signal depends on the relative alignment of Y3Fe5O12 and Co. This demonstrates a spin valve behavior with an effect amplitude of 120% in our systems. We demonstrate the reliability of the effect and investigate the origin by both temperature and power dependent measurements, showing that spin rectification effects and a magnetic layer alignment dependent spin transport effect result in the measured signal.
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