论文标题
通过不同的磁蛋白激发，PT/YIG双层中的旋转霍尔磁性
Spin Hall magnetoresistance in Pt/YIG bilayers via varying magnon excitation
论文作者
论文摘要
在非磁性材料中，所有通过自旋霍尔效应和反旋转厅效应生成的旋转霍尔磁磁性（SMR）和镁激发磁磁性（MMR）始终相互关联。然而，由于MMR可以忽略不足，镁对SMR的影响通常被忽略。在这里，我们研究了PT/Y3FE5O12（YIG）双层中的SMR，从5到300K，在AR+-ION铣削后处理YIG。处理的设备中的SMR比未处理的设备小。根据理论模拟，我们将这种现象归因于镁抑制引起的处理过的PT/YIG接口处的界面旋转电导。我们的实验结果指出，SMR和MMR是相互连接的，前者可以通过磁蛋白激发进行调节。我们的发现为分离和阐明基本机制提供了一种新的方法。
Spin Hall magnetoresistance (SMR) and magnon excitation magnetoresistance (MMR) that all generate via the spin Hall effect and inverse spin Hall effect in a nonmagnetic material are always related to each other. However, the influence of magnon excitation for SMR is often overlooked due to the negligible MMR. Here, we investigate the SMR in Pt/Y3Fe5O12 (YIG) bilayers from 5 to 300K, in which the YIG are treated after Ar+-ion milling. The SMR in the treated device is smaller than in the non-treated. According to theoretical simulation, we attribute this phenomenon to the reduction of the interfacial spin-mixing conductance at the treated Pt/YIG interface induced by the magnon suppression. Our experimental results point out that the SMR and the MMR are inter-connected, and the former could be modulated via magnon excitation. Our findings provide a new approach for separating and clarifying the underlying mechanisms.
