Skyrmion dynamics and transverse mobility: skyrmion Hall angle reversal on 2D periodic substrates with dc and biharmonic ac drivesNicolas P. Vizarim, Cynthia J.O. Reichhardt, Pablo A. Venegas and Charles ReichhardtEur. Phys. J. B, 93 6 (2020) 112DOI: https://doi.org/10.1140/epjb/e2020-10135-1