Metamaterial-inspired Fabry-Perot resonator antenna-enhanced spin rectification and inverse spin Hall effects

Abstract

A 5.8 GHz Fabry-Perot resonator antenna is proposed to improve the performance of the spin rectification effect and inverse spin Hall effect in the far field region. A planar inverse F-shaped antenna and a metamaterial superstrate are used to increase the magnitude of the electromagnetic field. The microwave electric field is enhanced by similar to 10-fold, while the magnetic field is enhanced by similar to 80-fold. Experimental results prove that the dc signal from the spin rectification effect and inverse spin Hall effect is significantly improved. This letter paves the way for the use of spintronic devices in wireless excitation applications.