Figure 5: Skyrmion and antiskyrmion collision in dipolar magnet.
A parameter set {L=150 × 100, Idip/J=0.092, K/J=0.6, H/J=0.04, α=0.01, β=0.0, j=0.001} with open boundary condition (OBC) is used. (a) The initial state at rest (case (i) in the text.) The colour code (q) is the same as in Fig. 1. (b–d) The snapshots of the time evolution under the electric current flowing from the upper to lower edges at t=6,000, 7,700 and 15,000 in units of 1/(γJ), respectively. (e–h) The spatial distribution of bz for the magnetic textures shown in a–d, respectively. The scale of bz is in r. (i–p) The results of nr and bz in case (ii) in text at t=0, 7,700, 8,400 and 15,000 in units of 1/(γJ), respectively. See Supplementary Movies 5 and 6.
