Correction of Phase Errors in a Spin-Wave Transmission Line by Nonadiabatic Parametric Pumping

It is shown that phase errors in a microwave spin-wave transmission line can be corrected by subjecting the signal-carrying propagating spin wave to the action of a localized nonadiabatic parametric pumping, having the localization length smaller than the spin-wave wavelength. In such a transmission line the phase-transmission characteristic has a "steplike" shape containing flat "stabilization plateaus" separated by intervals of size pi. Within the "plateau" regions the phase of the output spin wave is practically constant in a rather wide range of phases of the input spin wave. This effect can be used in magnonic logic devices for the correction of phase errors of up to +/- 0.25 pi. It is also proved that this phase-stabilization effect is stable against the variations of the spin-wave amplitude and is present across the amplitude range of the stable spin-wave propagation.