Cited 5 time in webofscience Cited 7 time in scopus

Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy

Title
Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy
Authors
Woo, SeonghoonSong, Kyung MeeHan, Hee-SungJung, Min-SeungIm, Mi-YoungLee, Ki-SukSong, Kun SooFischer, PeterHong, Jung-IlChoi, Jun WooMin, Byoung-ChulKoo, Hyun CheolChang, Joonyeon
DGIST Authors
Hong, Jung-Il
Issue Date
2017-05
Citation
Nature Communications, 8
Type
Article
Article Type
Article
Keywords
BubblesChiral MagnetDomain WallsLatticeLayer ExcitationMagnetic SkyrmionsMicroscopyRadiographyRoom TemperatureTorqueWeak Ferromagnetism
ISSN
2041-1723
Abstract
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. © 2017 The Author(s).
URI
http://hdl.handle.net/20.500.11750/5003
DOI
10.1038/ncomms15573
Publisher
Nature Publishing Group
Related Researcher
  • Author Hong, Jung Il Quantum Electric & Magnetic Materials Laboratory
  • Research Interests Electric and Magnetic Properties of Nanostructured Materials; Spintronics
Files:
Collection:
Department of Emerging Materials ScienceQuantum Electric & Magnetic Materials Laboratory1. Journal Articles


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