Fig. 6: Microscopic picture of ASR.
From: Acoustic spin rotation in heavy-metal-ferromagnet bilayers

a Schematic diagram of the physical origin of ASR. b ASR efficiency \(\eta=\left\vert {V}_{{{{{{{{\rm{ASR}}}}}}}}}/{V}_{{{{{{{{\rm{ASP}}}}}}}}}\right\vert\) of SAW devices with different frequencies (i.e., different finger widths).