Ultrafast imprinting of topologically protected magnetic textures via pulsed electrons

作者：Schaeffer A F; Duerr H A; Berakdar J

来源：Applied Physics Letters, 2017, 111(3): 032403.

DOI：10.1063/1.4991521

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 spatiotemporally controlled generation of skyrmionic excitations. Published by AIP Publishing.

• 出版日期2017-7-17