Fig. 1: Schematics of experimental setup and basic properties of surface acoustic wave devices.
From: Ordered creation and motion of skyrmions with surface acoustic wave
a Schematic of the integrated device with a pair of IDTs on both sides of the magnetic multilayer channel. Néel-type skyrmions are generated at the antinode of SAW which can be observed via magneto-optical Kerr effect microscopy. Current pulses are applied to drive the movement of created skyrmions along the channel. b Temperature image of the integrated device obtained by the infrared camera when RF voltage of 365.65 MHz and 21 dBm are applied to the IDT. c Typical SAW transmission spectra of the 5 μm wide delay line device with the magnetic channel placed between the two IDTs, which show three excited modes corresponding to the first (181.63 MHz), second (365.65 MHz) and third (546.03 MHz) harmonic. The spectra are obtained using RF signal of –5 dBm. d The average temperature at the center of magnetic channel under different frequencies as a function of applied power. The error bars correspond to the standard deviation.
