Abstract
Microwave power harvesting is one of the promising ways to solve energy problems in the future. Improving the power harvesting ability is the central work in this area. The inverse spin Hall effect (ISHE) in ferromagnetic (FM) and nonmagnetic (NM) metallic bilayers can be utilized to convert microwave power to direct current, which may be one of the candidates of microwave power harvesting. In this work, a FM/NM microstrip array is proposed to enhance the ISHE signal, while the spin rectification effect signal in the FM layer is suppressed. This enhancement is equivalent to connecting the power sources in series, namely, the ISHE voltage is proportional to the number of the FM/NM microstrips. Our work fertilizes the spintronics and shows the possibility to use ISHE in microwave power transfer and harvesting.
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