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Spin-orbit-related effects offer a highly promising route for reading andwriting information in magnetic units of future devices. These phenomena relynot only on the static magnetization orientation but also on its dynamics toachieve fast switchings that can reach the THz range. In this work, we considerCo/Pt and Fe/W bilayers to show that accounting for the phase differencebetween different processes is crucial to the correct description of thedynamical currents. By tuning each system towards its ferromagnetic resonance,we reveal that dynamical spin Hall angles can non-trivially change sign and beboosted by over 500%, reaching giant values. We demonstrate that charge andspin pumping mechanisms can greatly magnify or dwindle the currents flowingthrough the system, influencing all kinds of magnetoresistive and Hall effects,thus impacting also dc and second harmonic experimental measurements.

Dynamical amplification of magnetoresistances and Hall currents up to the THz regime