Spin wave Doppler effect

Development of magnon spintronics

Abstract

Spin wave Doppler shift measurements can directly evaluate the spin polarization in current (P), which determines the performance of spintronic devices. Here we report that the Gilbert damping (α) and coefficient of the non-adiabatic spin transfer torque (β) can be simultaneously determined by performing a single series of time domain measurements of the spin wave Doppler shift in a ferromagnetic film. We will introduce a recent development in magnon spintronics.