2017/05/24 by Seonghoon Woo, Kyung Song, Kyung Mee Song +15 · 1 citation
Engineering · Physics and Astronomy · #Aerospace engineering #Characterization and Applications of Magnetic Nanoparticles #Condensed matter physics #Dynamics (music) #Excitation #Ferromagnetism #Laser #Magnetic field #Magnetic properties of thin films #Magnetization #Magnetization dynamics #Nanosecond #Optics #Orbit (dynamics) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Skyrmion #Spin (aerodynamics) #Spintronics #Torque #Ultrashort pulse #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1038/ncomms15573
published as Nature Communications 8, 15573 (2017) · 30 pages, 5 figures
openalex publication_date 2017/05/24 · arxiv created 2017/05/25 · arxiv updated 2017/05/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/08
Magnetic skyrmions are topologically protected spin textures with attractive properties suitable for high-density and low-power spintronic device applications. Much effort has been dedicated to understanding the dynamical behaviours of the magnetic skyrmions. However, experimental observation of the ultrafast dynamics of this chiral magnetic texture in real space, which is the hallmark of its quasiparticle nature, has so far remained elusive. Here, we report nanosecond-dynamics of a 100nm-diameter magnetic skyrmion during a current pulse application, using a time-resolved pump-probe soft X-ray imaging technique. We demonstrate that distinct dynamic excitation states of magnetic skyrmions, triggered by current-induced spin-orbit torques, can be reliably tuned by changing the magnitude of spin-orbit torques. Our findings show that the dynamics of magnetic skyrmions can be controlled by the spin-orbit torque on the nanosecond time scale, which points to exciting opportunities for ultrafast and novel skyrmionic applications in the future.