Efficient electromagnetic transducers for spin-wave devices

Abstract This paper presents a system-level efficiency analysis, rapid design methodology, and numerical demonstration of efficient sub-micron, spin-wave transducers in microwave system. Applications such as Boolean spintronics, analog spin-wave-computing, magnetic circuits are expected to benefit from this analysis approach. These applications have the potential provide low-power, paradigm alternative modern electronic systems, but they been stymied by limited understanding microwave, for circuits. proposes an end-to-end microwave/spin-wave system model that permits use classical network matching theory towards analyzing designing transduction systems. further compares magnetostatic-wave transducer electromagnetic simulations finds close agreement, indicating theory, despite simplifying assumptions, is useful yet accurate design. It suggests when modified include exchange interaction, will also be rapidly accurately launching magnons at wavelengths. Comparisons made between microstrip co-planar waveguide lines, which expedient, narrowband, low-efficiency transducers, grating meander lines capable high-efficiency wideband performance. The concludes microwave-to-spin-wave possible on YIG $$\varvec{\lambda = 500}\,$$ λ = 500 nm spin waves with − 4.45 dB 3 dB-bandwidth 134 MHz.