Figure 4: Interaction between skyrmion and antiskyrmion in dipolar magnet.

A parameter set {L=150 × 100, Idip/J=0.092, K/J=0.6, H/J=0.04, α=0.01} with open boundary condition (OBC) is used. (a,b) The initial states with different arrangements in in-plane magnetic texture. The colour code is shown in c. (d,e) The results of time evolution at t=15,500 in units of 1/(γJ) from the initial states in a and b, respectively; a and b correspond to the initial conditions in Fig. 5a,i, respectively.