The antivortex is a fundamental magnetization structure which is the topological counterpart of the well-known magnetic vortex. We study here the ultrafast dynamic behavior of an isolated antivortex in a patterned Permalloy thin-film element. Using micromagnetic simulations we predict that the antivortex response to an ultrashort external field pulse is characterized by the production of a new antivortex as well as of a temporary vortex, followed by an annihilation process. These processes are complementary to the recently reported response of a vortex and, like for the vortex, lead to the reversal of the orientation of the antivortex core region. In addition to its fundamental interest, this dynamic magnetization process could be used for the generation and propagation of spin waves for novel logical circuits.
Writing and erasing skyrmions by single ultrafast laser pulses in monolayer Janus 2D magnets
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；Humboldt-Universität zu Berlin（柏林洪堡大学）；Center for Quantum Matter, School of Physics, Zhejiang University（浙江大学物理学院量子物质中心）；Helmholtz-Zentrum Berlin für Materialien und Energie（柏林亥姆霍兹材料能源研究中心）；University of Chinese Academy of Sciences（中国科学院大学）
Visualizing Microwave-Driven Dynamics of Antiskyrmions and Surface Skyrmions
RIKEN Center for Emergent Matter Science (CEMS)（RIKEN 新兴物质科学中心）；Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory（布鲁克海文国家实验室凝聚态物理与材料科学部）；Department of Physics and Astronomy, Stony Brook University（石溪大学物理与天文学系）；Fundamental Quantum Science Program, TRIP Headquarters, RIKEN（RIKEN TRIP总部基础量子科学项目）；Baton Zone Program, TRIP Headquarters, RIKEN（RIKEN TRIP总部 Baton Zone 项目）；Department of Applied Physics, The University of Tokyo（东京大学应用物理系）；Tokyo College, The University of Tokyo（东京大学东京学院）；Institute of Science Tokyo（东京科学大学）
Single-pulse strain-induced precessional dynamics of magnetization in Co-doped iron garnet
HFML-FELIX；Radboud University, Institute for Molecules and Materials（拉德堡德大学分子与材料研究所）；Russian Quantum Center, Skolkovo Innovation Center（俄罗斯量子中心斯科尔科沃创新中心）；Faculty of Physics, Lomonosov Moscow State University（莫斯科国立大学物理系）；Faculty of Physics, University of Bialytsok（比亚韦斯托克大学物理系）
