  Searching for new methods to enhance the stability of antiferromagnetic (AFM)
skyrmion during its motion is an important issue for AFM spintronic devices.
Herein, the spin polarized current-induced dynamics of a distorted AFM skyrmion
is numerically studied, based on the Landau Lifshitz Gilbert simulations of the
model with an anisotropic Dzyaloshinskii Moriya (DM) interaction. It is
demonstrated that the DM interaction anisotropy induces the skyrmion
deformation, which suppresses the distortion during the motion and enhances the
stability of the skyrmion. Moreover, the effect of the DM interaction
anisotropy on the skyrmion velocity is investigated in detail, and the
simulated results are further explained by Thiele theory. This work unveils a
promising strategy to enhance the stability and the maximum velocity of AFM
skyrmion, benefiting future spintronic applications.
