  Magnetic skyrmions in thin films with perpendicular magnetic anisotropy are
promising candidates for magnetic memory and logic devices, making the
development of ways to transport skyrmions efficiently and precisely of
significant interest. Here, we investigate the transport of skyrmions by
surface acoustic waves (SAWs) via several modalities using micromagnetic
simulations. We show skyrmion pinning sites created by standing SAWs at
anti-nodes and skyrmion Hall-like motion without pinning driven by travelling
SAWs. We also show how orthogonal SAWs formed by combining a longitudinal
travelling SAW and a transverse standing SAW can be used for the 2D positioning
of skyrmions. Our results also suggest SAWs offer a viable approach to the
transport of multiple skyrmions along multichannel racetrack.
