Fig. 3: Skyrmion motions driven by SH waves.
The MOKE images of (a–d) Q = +1 (e–h) Q = −1 skyrmions motion after the exciting of 300 ms SH wave pulses. The wavelength of SAWs is 8 μm. The RF power applied to IDTs is 26 dBm. The SH wave propagating direction is from left to right. The SAW creates skyrmions with a topological charge Q = ±1 when the positive or negative out-of-plane magnetic field (Hoop = ±0.8 mT) is applied. The scale bar in the MOKE images is 2 μm.
