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Deformation of the moving magnetic skyrmion lattice in MnSi under electric current flow

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Okuyama D., Bleuel M., White J. S., Ye Q., Krzywon J., Nagy G., Im Z. Q., Živković I., Bartkowiak M., Rønnow H. M., Hoshino S., Iwasaki J., Nagaosa N., Kikkawa A., Taguchi Y., Tokura Y., Higashi D., Reim J. D., Nambu Y., Sato T. J.,
Project Exploration of emerging magnetoelectric coupling effects in new materials
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Original article (peer-reviewed)

Journal Communications Physics
Volume (Issue) 2(1)
Page(s) 79 - 79
Title of proceedings Communications Physics
DOI 10.1038/s42005-019-0175-z

Open Access

Type of Open Access Publisher (Gold Open Access)


Topological defects are found ubiquitously in various kinds of matter, such as vortices in type-II superconductors, and magnetic skyrmions in chiral ferromagnets. While knowledge on the static behavior of magnetic skyrmions is accumulating steadily, their dynamics under forced flow is still a widely open issue. Here, we report the deformation of the moving magnetic skyrmion lattice in MnSi under electric current flow observed using small-angle neutron scattering. A spatially inhomogeneous rotation of the skyrmion lattice, with an inverse rotation sense for opposite sample edges, is observed for current densities greater than a threshold value jt ~ 1 MA m−2 (106 A m−2). Our result show that skyrmion lattices under current flow experience significant friction near the sample edges due to pinning, this being a critical effect that must be considered for anticipated skyrmion-based applications at the nanoscale.