  It is widely believed that the skyrmion Hall effect, often disruptive for
device applications, vanishes for overall topologically trivial structures such
as (synthetic) antiferromagnetic skyrmions and skyrmioniums due to a
compensation of Magnus forces. In this manuscript, however, we report that in
contrast to the case of spin-transfer torque driven skyrmion motion, this
notion is generally false for spin-orbit torque driven objects. We show that
the skyrmion Hall angle is directly related to their helicity and imposes an
unexpected roadblock for developing faster and lower input racetrack memories
based on spin-orbit torques.
