PAPER / ARXIV:2609.13112
Tim Titze (1), Marcel Möller (2), Timo Schmidt (3), Mariam Hassan (3), Sabri Koraltan (4), Stefan Mathias (1 and 5), Manfred Albrecht (3), Claus Ropers (1, 2 and 5), Daniel Steil (1) ((1) University of Göttingen, Germany and (2) Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany and (3) University of Augsburg, Germany and (4) Technical University of Vienna, Austria and (5) ICASEC, University of Göttingen, Germany)
RESUMO
Ultrafast creation and manipulation of topologically non-trivial spin objects promises significant potential for spintronic applications. Here, we demonstrate laser-induced nucleation of skyrmions and antiskyrmions with topological charge up to $|Q|=3$ from the saturated magnetization state of a Co/Ni-multilayer which does not intrinsically host a skyrmionic ground state. The resulting configuration of spin objects thus constitutes a metastable, thermodynamically hidden magnetic state. We control the number and type of spin objects by the excitation fluence and the external out-of-plane magnetic field.
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