Generation of magnetic skyrmion bubbles

Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents.
Olle Heinonen, Wanjun Jiang, Hamoud Somaily, Suzanne G. E. te Velthuis, and Axel Hoffmann
Phys. Rev. B 93, 094407 (2016)

The left panel shows a contour plot of the out-of-plane component of the magnetization director of a skyrmion bubble. The right panel shows the out-of-plane component of the magnetization across the line indicated in the left panel. The domain-wall width estimated from $m_z=0.9$ to $m_z=-0.9$ is about 30 nm.