Generation of magnetic skyrmions by focused vortex laser pulses

O. P. Polyakov, I. A. Gonoskov, V. S. Stepanyuk*, E. K.U. Gross

*Corresponding author for this work

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Abstract

We propose a method to generate magnetic skyrmions by intense laser pulses optimally focused on a magnetically ordered 2D-layer. In particular, we consider few-cycle intense pulses with the magnetic vortex structure near the focus region on the layer. The spin dynamics is modeled using the Landau-Lifshitz-Gilbert equation and includes the Dzyaloshinskii-Moriya interaction. We demonstrate that skyrmions can be observed within a few picoseconds after the end of the laser pulse. We analyze the physical picture of this process and work out which laser pulse and 2D-layer parameters are required for the generation.

Original languageAmerican English
Article number073904
JournalJournal of Applied Physics
Volume127
Issue number7
DOIs
StatePublished - 21 Feb 2020

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