Magnetic skyrmion generation by reflective spin-wave focusing
arXiv:2106.12876 · doi:10.3389/fphy.2021.729967
Abstract
We propose a method to generate magnetic skyrmions by focusing spin waves totally reflected by a curved film edge. Based on the principle of identical magnonic path length, we derive the edge contour that is parabolic and frequency-independent. Micromagnetic simulations are performed to verify our theoretical design. It is found that under proper conditions, magnetic droplet first emerges near the focal point where the spin-wave intensity has been significantly enhanced, and then converts to magnetic skyrmion accompanied by a change of the topological charge. The phase diagram about the amplitude and frequency of the driving field for skyrmion generation is obtained. Our finding would be helpful for the designment of spintronic devices combing the advantage of skyrmionics and magnonics.
5 pages, 5 figures
References in corpus (8)
- Magnon-skyrmion scattering in chiral magnets
- Spirit: Multifunctional Framework for Atomistic Spin Simulations
- Magnonic frequency comb through nonlinear magnon-skyrmion scattering
- Absorbing boundary layers for spin wave micromagnetics
- Microwave-induced dynamic switching of magnetic skyrmion cores in nanodots
- Spin-wave focusing induced skyrmion generation
- Magnetic Droplet Solitons
- Thermal Activation Barriers for Creation and Annihilation of Magnetic Droplet Solitons in the Presence of Spin Transfer Torque