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Deformation of the moving magnetic skyrmion lattice in MnSi under electric current flow.
Okuyama, D; Bleuel, M; White, J S; Ye, Q; Krzywon, J; Nagy, G; Im, Z Q; Zivkovic, 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.
Afiliação
  • Okuyama D; Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan.
  • Bleuel M; NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8562, USA.
  • White JS; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, USA.
  • Ye Q; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Krzywon J; Laboratory for Neutron Scattering and Imaging (LNS), Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland.
  • Nagy G; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, USA.
  • Im ZQ; NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8562, USA.
  • Zivkovic I; Laboratory for Neutron Scattering and Imaging (LNS), Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland.
  • Bartkowiak M; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Rønnow HM; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Hoshino S; Laboratory for Scientific Developments and Novel Materials (LDM), Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland.
  • Iwasaki J; Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
  • Nagaosa N; RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
  • Kikkawa A; Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
  • Taguchi Y; RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
  • Tokura Y; Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
  • Higashi D; RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
  • Reim JD; RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
  • Nambu Y; RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
  • Sato TJ; Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
Commun Phys ; 2(1)2019.
Article em En | MEDLINE | ID: mdl-38915317
ABSTRACT
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 j t ~ 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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article