  Magnetic skyrmionium is a skyrmion-like spin texture with nanoscale size and
high mobility. It is a topologically trivial but dynamically stable structure,
which can be used as a non-volatile information carrier for next-generation
spintronic storage and computing devices. Here, we study the dynamics of a
skyrmionium driven by the spin torque in a ferrimagnetic nanotrack. It is found
that the direction of motion is jointly determined by the internal
configuration of a skyrmionium and the spin polarization vector. Besides, the
deformation of a skyrmionium induced by the intrinsic skyrmion Hall effect
depends on both the magnitude of the driving force and the net angular
momentum. The ferrimagnetic skyrmionium is most robust at the angular momentum
compensation point, whose dynamics is quite similar to the skyrmionium in
antiferromagnet. The skyrmion Hall effect is perfectly prohibited, where it is
possible to observe the position of the skyrmionium by measuring the
magnetization. Furthermore, the current-induced dynamics of a ferrimagnetic
skyrmionium is compared with that of a ferromagnetic and antiferromagnetic
skyrmionium. We also make a comparison between the motion of a ferrimagnetic
skyrmionium and a skyrmion. Our results will open a new field of ferrimagnetic
skyrmioniums for future development of ferrimagnetic spintronics devices.
