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

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 appl ications in the future.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [5]; ORCiD logo [3];  [1]; ORCiD logo [6];  [7];  [1]; ORCiD logo [1];  [1];  [1]
  1. Korea Inst. of Science and Technology, Seoul (Korea) Center for Spintronics
  2. Korea Inst. of Science and Technology, Seoul (Korea) Center for Spintronics; Sookmyung Women's Univ., Seoul (Korea). Dept of Physics
  3. Ulsan National Inst. of Science and Technology, Ulsan (Korea). School of Materials Science and Engineering
  4. Daegu Gyeongbuk Inst. of Science and Technology (DGIST), Daegu (Korea). Dept. of Emerging Materials Science
  5. Daegu Gyeongbuk Inst. of Science and Technology (DGIST), Daegu (Korea). Research Center for Emerging Materials; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Center for X-ray Optics
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  7. Daegu Gyeongbuk Inst. of Science and Technology (DGIST), Daegu (Korea). Dept. of Emerging Materials Science, Research Center for Emerging Materials
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1379861
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE; magnetic properties and materials; spintronics

Citation Formats

Woo, Seonghoon, Song, Kyung Mee, Han, Hee-Sung, Jung, Min-Seung, Im, Mi-Young, Lee, Ki-Suk, Song, Kun Soo, Fischer, Peter, Hong, Jung-Il, Choi, Jun Woo, Min, Byoung-Chul, Koo, Hyun Cheol, and Chang, Joonyeon. Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy. United States: N. p., 2017. Web. doi:10.1038/ncomms15573.
Woo, Seonghoon, Song, Kyung Mee, Han, Hee-Sung, Jung, Min-Seung, Im, Mi-Young, Lee, Ki-Suk, Song, Kun Soo, Fischer, Peter, Hong, Jung-Il, Choi, Jun Woo, Min, Byoung-Chul, Koo, Hyun Cheol, & Chang, Joonyeon. Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy. United States. doi:10.1038/ncomms15573.
Woo, Seonghoon, Song, Kyung Mee, Han, Hee-Sung, Jung, Min-Seung, Im, Mi-Young, Lee, Ki-Suk, Song, Kun Soo, Fischer, Peter, Hong, Jung-Il, Choi, Jun Woo, Min, Byoung-Chul, Koo, Hyun Cheol, and Chang, Joonyeon. Wed . "Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy". United States. doi:10.1038/ncomms15573. https://www.osti.gov/servlets/purl/1379861.
@article{osti_1379861,
title = {Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy},
author = {Woo, Seonghoon and Song, Kyung Mee and Han, Hee-Sung and Jung, Min-Seung and Im, Mi-Young and Lee, Ki-Suk and Song, Kun Soo and Fischer, Peter and Hong, Jung-Il and Choi, Jun Woo and Min, Byoung-Chul and Koo, Hyun Cheol and Chang, Joonyeon},
abstractNote = {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 appl ications in the future.},
doi = {10.1038/ncomms15573},
journal = {Nature Communications},
number = ,
volume = 8,
place = {United States},
year = {2017},
month = {5}
}

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Cited by: 19 works
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Works referenced in this record:

Giant facet-dependent spin-orbit torque and spin Hall conductivity in the triangular antiferromagnet IrMn 3
journal, September 2016


Spin-Torque Switching with the Giant Spin Hall Effect of Tantalum
journal, May 2012


A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics
journal, January 1958


Current-driven dynamics of chiral ferromagnetic domain walls
journal, June 2013

  • Emori, Satoru; Bauer, Uwe; Ahn, Sung-Min
  • Nature Materials, Vol. 12, Issue 7
  • DOI: 10.1038/nmat3675

Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures
journal, January 2016

  • Boulle, Olivier; Vogel, Jan; Yang, Hongxin
  • Nature Nanotechnology, Vol. 11, Issue 5
  • DOI: 10.1038/nnano.2015.315

Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature
journal, January 2016

  • Moreau-Luchaire, C.; Moutafis, C.; Reyren, N.
  • Nature Nanotechnology, Vol. 11, Issue 5
  • DOI: 10.1038/nnano.2015.313

Skyrmions on the track
journal, March 2013

  • Fert, Albert; Cros, Vincent; Sampaio, João
  • Nature Nanotechnology, Vol. 8, Issue 3
  • DOI: 10.1038/nnano.2013.29

Magnetic field driven domain-wall propagation in magnetic nanowires
journal, August 2009


Current-induced skyrmion dynamics in constricted geometries
journal, September 2013

  • Iwasaki, Junichi; Mochizuki, Masahito; Nagaosa, Naoto
  • Nature Nanotechnology, Vol. 8, Issue 10
  • DOI: 10.1038/nnano.2013.176

Skyrmion Lattice in a Chiral Magnet
journal, February 2009


Determination of spin torque efficiencies in heterostructures with perpendicular magnetic anisotropy
journal, April 2016


Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
journal, December 2012


Skyrmion lattice in the doped semiconductor Fe 1 x Co x Si
journal, January 2010


Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets
journal, February 2016

  • Woo, Seonghoon; Litzius, Kai; Krüger, Benjamin
  • Nature Materials, Vol. 15, Issue 5
  • DOI: 10.1038/nmat4593

Skyrmion flow near room temperature in an ultralow current density
journal, January 2012

  • Yu, X. Z.; Kanazawa, N.; Zhang, W. Z.
  • Nature Communications, Vol. 3, Issue 1
  • DOI: 10.1038/ncomms1990

Dynamically stabilized magnetic skyrmions
journal, September 2015

  • Zhou, Y.; Iacocca, E.; Awad, A. A.
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms9193

Mobility of bubbles with small numbers of Bloch lines
journal, November 1973

  • Malozemoff, A. P.
  • Journal of Applied Physics, Vol. 44, Issue 11
  • DOI: 10.1063/1.1662095

Dynamics and inertia of skyrmionic spin structures
journal, February 2015

  • Büttner, Felix; Moutafis, C.; Schneider, M.
  • Nature Physics, Vol. 11, Issue 3
  • DOI: 10.1038/nphys3234

Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions
journal, July 2011

  • Heinze, Stefan; von Bergmann, Kirsten; Menzel, Matthias
  • Nature Physics, Vol. 7, Issue 9
  • DOI: 10.1038/nphys2045

Classics in Magnetics A Phenomenological Theory of Damping in Ferromagnetic Materials
journal, November 2004


Spontaneous skyrmion ground states in magnetic metals
journal, August 2006

  • Rößler, U. K.; Bogdanov, A. N.; Pfleiderer, C.
  • Nature, Vol. 442, Issue 7104, p. 797-801
  • DOI: 10.1038/nature05056

Skyrmion Hall effect revealed by direct time-resolved X-ray microscopy
journal, December 2016

  • Litzius, Kai; Lemesh, Ivan; Krüger, Benjamin
  • Nature Physics, Vol. 13, Issue 2
  • DOI: 10.1038/nphys4000

Perpendicular switching of a single ferromagnetic layer induced by in-plane current injection
journal, August 2011

  • Miron, Ioan Mihai; Garello, Kevin; Gaudin, Gilles
  • Nature, Vol. 476, Issue 7359
  • DOI: 10.1038/nature10309

Breathing modes of confined skyrmions in ultrathin magnetic dots
journal, August 2014


Steady-State Motion of Magnetic Domains
journal, February 1973


Near room-temperature formation of a skyrmion crystal in thin-films of the helimagnet FeGe
journal, December 2010

  • Yu, X. Z.; Kanazawa, N.; Onose, Y.
  • Nature Materials, Vol. 10, Issue 2
  • DOI: 10.1038/nmat2916

Skyrmion Creation and Manipulation by Nano-Second Current Pulses
journal, March 2016

  • Yuan, H. Y.; Wang, X. R.
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep22638

Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
journal, September 2012

  • Pai, Chi-Feng; Liu, Luqiao; Li, Y.
  • Applied Physics Letters, Vol. 101, Issue 12
  • DOI: 10.1063/1.4753947

Anisotropic Superexchange Interaction and Weak Ferromagnetism
journal, October 1960


Blowing magnetic skyrmion bubbles
journal, June 2015


Emergent electrodynamics of skyrmions in a chiral magnet
journal, February 2012

  • Schulz, T.; Ritz, R.; Bauer, A.
  • Nature Physics, Vol. 8, Issue 4
  • DOI: 10.1038/nphys2231

Real-space observation of a two-dimensional skyrmion crystal
journal, June 2010


Vortex Core-Driven Magnetization Dynamics
journal, April 2004


Dynamics and switching processes for magnetic bubbles in nanoelements
journal, June 2009


Eigenfrequencies of vortex state excitations in magnetic submicron-size disks
journal, January 2002

  • Guslienko, K. Yu.; Ivanov, B. A.; Novosad, V.
  • Journal of Applied Physics, Vol. 91, Issue 10
  • DOI: 10.1063/1.1450816

Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
journal, September 2011


Current-driven spin torque induced by the Rashba effect in a ferromagnetic metal layer
journal, January 2010

  • Mihai Miron, Ioan; Gaudin, Gilles; Auffret, Stéphane
  • Nature Materials, Vol. 9, Issue 3
  • DOI: 10.1038/nmat2613

    Works referencing / citing this record:

    Direct current-tunable MHz to multi-GHz skyrmion generation and control
    journal, July 2019