具有悬浮Cu沟道的横向自旋阀中的自旋输运
Spin transport in a lateral spin valve with a suspended Cu channel
摘要：
我们研究自旋输运通过一个悬浮的铜通道的电非本地4端测量未来的自旋力学应用。由于自旋输运通过悬浮铜通道的磁阻被观察到，其幅度是一个传统的固定铜横向自旋阀。在悬浮的Cu通道的自旋扩散长度估计为340 nm，在室温下从自旋信号依赖于铁磁注入器和检测器电极之间的距离。这个值被发现是略短于在一个固定的铜。悬浮Cu沟道中的自旋扩散长度的减小归因于在Cu沟道的底部源自自然氧化的Cu的自旋散射的增加。
英文摘要：
We study spin transport through a suspended Cu channel by an electrical non-local 4-terminal measurement for future spin mechanics applications. A magnetoresistance due to spin transport through the suspended Cu channel is observed, and its magnitude is comparable to that of a conventional fixed Cu lateral spin valve. The spin diffusion length in the suspended Cu channel is estimated to be 340 nm at room temperature from the spin signal dependence on the distance between the ferromagnetic injector and detector electrodes. This value is found to be slightly shorter than in a fixed Cu. The decrease in the spin diffusion length in the suspended Cu channel is attributed to an increase in spin scattering originating from naturally oxidized Cu at the bottom of the Cu channel.
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