2017/06/26 by A. F. Schäffer, H. A. Dürr, J. Berakdar · 1 citation
Physics and Astronomy · #physics.app-ph
paper · pdf · doi:10.1063/1.4991521
10 pages, 5 figures, accepted paper, APL 2017
arxiv created 2017/06/26 · arxiv updated 2017/06/27
Short electron pulses are demonstrated to trigger and control magnetic excitations, even at low electron current densities. We show that the tangential magnetic field surrounding a picosecond electron pulse can imprint topologically protected magnetic textures such as skyrmions in a sample with a residual Dzyaloshinskii-Moriya spin-orbital coupling. Characteristics of the created excitations such as the topological charge can be steered via the duration and the strength of the electron pulses. The study points to a possible way for a spatio-temporally controlled generation of skyrmionic excitations.