Ultrafast imprinting of topologically protected magnetic textures via pulsed electrons
arXiv:1706.08288 · doi:10.1063/1.4991521
Abstract
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.
arXiv comment10 pages, 5 figures, accepted paper, APL 2017
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