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Skyrmions in chiral magnets

Skyrmions are nanoscale particlelike magnetic textures discovered in chiral magnets in 2009. Since that time the field has shown tremendous growth, with the identification of more and more skyrmion-supporting materials and the development of additional experimental techniques capable of directly accessing the skyrmion dynamics. Skyrmions represent an example of a collectively interacting system of particles that can exhibit depinning and sliding phenomena, but unlike other such systems, due to the skyrmion topology a Magnus term plays a strong role in the skyrmion dynamics. Numerous recent theoretical and experimental papers have demonstrated that this Magnus term strongly affects the skyrmion motion and the interactions of the skyrmions with quenched disorder or pinning. We explore the rich dynamics that emerge in this novel system.

Preprints:

Papers:

  1. Controlled skyrmion ratchet in linear protrusion defects
    F.S. Rocha, J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    Phys. Rev. B 109, 054407 (2024). arXiv


  2. Skyrmion transport and annihilation in funnel geometries
    F.S. Rocha, J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    J. Phys.: Condens. Matter 36, 115801 (2024). arXiv


  3. Soliton motion induced along ferromagnetic skyrmion chains in chiral thin nanotracks
    J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    J. Mag. Mag. Mater. 587, 171280 (2023). arXiv


  4. Kibble-Zurek scenario and coarsening across nonequilibrium phase transitions in driven vortices and skyrmions
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. Res. 5, 033221 (2023). arXiv


  5. Peak effect, melting, and transport in skyrmion crystals
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. B 108, 014428 (2023). arXiv


  6. Spontaneous skyrmion conformal lattice and transverse motion during dc and ac compression
    J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    New J. Phys. 25, 053020 (2023). arXiv


  7. Magnus induced diode effect for skyrmions in channels with periodic potentials
    J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    J. Phys.: Condens. Matter 51, 015804 (2022). arXiv


  8. Editorial: Generation, detection and manipulation of skyrmions in magnetic nanostructures
    H.Y. Yuan, X. Zhang, and C.J.O. Reichhardt
    Front. Phys. 10, 964975 (2022).


  9. Dynamic phases and reentrant Hall effect for vortices and skyrmions on periodic pinning arrays
    C.J.O. Reichhardt and C. Reichhardt
    Eur. Phys. J. B 95, 135 (2022). arXiv


  10. Clogging, diode and collective effects of skyrmions in funnel geometries
    J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    New J. Phys. 24, 103030 (2022). arXiv


  11. Statics and dynamics of skyrmions interacting with disorder and nanostructures
    C. Reichhardt, C.J.O. Reichhardt, and M.V. Milosevic
    Rev. Mod. Phys. 94, 035005 (2022). arXiv


  12. Commensuration effects on skyrmion Hall angle and drag for manipulation of skyrmions on two-dimensional periodic substrates
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. B 105, 214437 (2022). arXiv


  13. Soliton motion in skyrmion chains: Stabilization and guidance by nanoengineered pinning
    N.P. Vizarim, J.C. Bellizotti Souza, C.J.O. Reichhardt, C. Reichhardt, M.V. Milosevic, and P.A. Venegas
    Phys. Rev. B 105, 224409 (2022). arXiv


  14. Directed motion of liquid crystal skyrmions with oscillating fields
    A. Duzgun, C. Nisoli, C.J.O. Reichhardt, and C. Reichhardt
    New J. Phys. 24, 033033 (2022). arXiv


  15. Fluctuations and pinning for individually manipulated skyrmions
    C.J.O. Reichhardt and C. Reichhardt
    Front. Phys. 9, 767491 (2021). arXiv


  16. Visualizing the strongly reshaped skyrmion Hall effect in multilayer wire devices
    A.K.C. Tan, P. Ho, J. Lourembam, L. Huang, H.K. Tan, C.J.O. Reichhardt, C. Reichhardt, and A. Soumyanarayan
    Nature Commun. 12, 4252 (2021). arXiv


  17. Dynamics and nonmonotonic drag for individually driven skyrmions
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. B 104, 064441 (2021). arXiv


  18. Skyrmion ratchet in funnel geometries
    J.C. Bellizotti Souza, N.P. Vizarim, C.J.O. Reichhardt, C. Reichhardt, and P.A. Venegas
    Phys. Rev. B 104, 054434 (2021). arXiv


  19. Directional locking and the influence of obstacle density on skyrmion dynamics in triangular and honeycomb arrays
    N.P. Vizarim, J.C. Bellizotti Souza, C. Reichhardt, C.J.O. Reichhardt, and P.A. Venegas
    J. Phys.: Condens. Matter 33, 305801 (2021). arXiv


  20. Guided skyrmion motion along pinning array interfaces
    N.P. Vizarim, C. Reichhardt, P.A. Venegas, and C.J.O. Reichhardt
    J. Mag. Mag. Mater. 528, 167710 (2021). arXiv


  21. Skyrmion pinball and directed motion on obstacle arrays
    N.P. Vizarim, C.J.O. Reichhardt, P.A. Venegas, and C. Reichhardt
    J. Phys. Commun. 4, 085001 (2020). arXiv


  22. Shapiro steps and nonlinear skyrmion Hall angles for dc and ac driven skyrmions on a two dimensional periodic substrate
    N.P. Vizarim, C. Reichhardt, P.A. Venegas, and C.J.O. Reichhardt
    Phys. Rev. B 102, 104413 (2020). arXiv


  23. Skyrmion dynamics and transverse mobility: Skyrmion Hall angle reversal on 2D periodic substrates with dc and biharmonic ac drives
    N.P. Vizarim, C.J.O. Reichhardt, P.A. Venegas, and C. Reichhardt
    Eur. Phys. J. B 93, 112 (2020) arXiv


  24. Dynamics of Magnus dominated particle clusters, collisions, pinning and ratchets
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. E 101, 062602 (2020). arXiv


  25. Skyrmion dynamics and topological sorting on periodic obstacle arrays
    N.P. Vizarim, C. Reichhardt, C.J.O. Reichhardt, and P.A. Venegas
    New J. Phys. 22, 053025 (2020). arXiv


  26. Commensurate states and pattern switching via liquid crystal skyrmions trapped in a square lattice
    A. Duzgun, C. Nisoli, C.J.O. Reichhardt, and C. Reichhardt
    Soft Matter 16, 3338 (2020). arXiv


  27. Shear banding, intermittency, jamming and dynamic phases for skyrmions in inhomogeneous pinning arrays
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. B 101, 054423 (2020). arXiv


  28. Chiral edge currents for ac driven skyrmions in confined pinning geometries
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. B 100, 174414 (2019). arXiv


  29. Reentrant pinning, dynamic row reduction, and skyrmion accumulation for driven skyrmions in inhomogeneous pinning arrays
    C. Reichhardt and C.J.O. Reichhardt
    EPL 129, 21001 (2020). arXiv


  30. Nonlinear transport, dynamic ordering, and clustering for driven skyrmions on random pinning
    C. Reichhardt and C.J.O. Reichhardt
    Phys. Rev. B 99, 104418 (2019). arXiv


  31. Skyrmions in anisotropic magnetic fields: Strain and defect dynamics
    R. Brearton, M.W. Olszewski, S. Zhang, M.R. Eskildsen, C. Reichhardt, C.J.O. Reichhardt, G. van der Laan, and T. Hesjedal
    MRS Adv. 4, 643 (2019).


  32. Disordering, clustering, and laning transitions in particle systems with dispersion in the Magnus term
    C.J.O. Reichhardt and C. Reichhardt
    Phys. Rev. E 99, 012606 (2019). arXiv


  33. Reversible to irreversible transitions in periodically driven skyrmion systems
    B.L. Brown, C. Reichhardt, and C.J.O. Reichhardt
    New J. Phys. 21, 013001 (2019). arXiv


  34. Thermal creep and the skyrmion Hall angle in driven skyrmion crystals
    C. Reichhardt and C.J.O. Reichhardt
    J. Phys.: Condens. Matter 31, 07LT01 (2019). arXiv


  35. Nonequilibrium phases and segregation for skyrmions on periodic pinning arrays
    C. Reichhardt, D. Ray, and C.J.O. Reichhardt
    Phys. Rev. B 98, 134418 (2018). arXiv


  36. Avalanches and criticality in driven magnetic skyrmions
    S.A. Diaz, C. Reichhardt, D.P. Arovas, A. Saxena, and C.J.O. Reichhardt
    Phys. Rev. Lett. 120, 117203 (2018). arXiv


  37. Fluctuations and noise signatures of driven magnetic skyrmions
    S.A. Diaz, C.J.O. Reichhardt, D.P. Arovas, A. Saxena, and C. Reichhardt
    Phys. Rev. B 96, 085106 (2017). arXiv


  38. Reversible vector ratchets for skyrmion systems
     X. Ma, C.J. Olson Reichhardt, and C. Reichhardt
    Phys. Rev. B 95, 104401 (2017). arXiv


  39. Shapiro spikes and negative mobility for skyrmion motion on quasi-one-dimensional periodic substrates
    C. Reichhardt and C.J. Olson Reichhardt
    Phys. Rev. B 95, 014412 (2017). arXiv


  40. Noise fluctuations and drive dependence of the skyrmion Hall effect in disordered systems
     C. Reichhardt and C.J. Olson Reichhardt
    New J. Phys. 18, 095005 (2016). arXiv


  41. Emergent geometric frustration of artificial magnetic skyrmion crystals
     F. Ma, C. Reichhardt, W. Gan, C.J. Olson Reichhardt, and W.S. Lew
    Phys. Rev. B 94, 144405 (2016) arXiv


  42. Magnus-induced dynamics of driven skyrmions on a quasi-one-dimensional periodic substrate
     C. Reichhardt and C.J. Olson Reichhardt
    Phys. Rev. B 94, 094413 (2016). arXiv


  43. Shapiro steps for skyrmion motion on a washboard potential with longitudinal and transverse ac drives
     C. Reichhardt and C.J. Olson Reichhardt
    Phys. Rev. B 92, 224432 (2015). arXiv


  44. Magnus-induced ratchet effects for skyrmions interacting with asymmetric substrates
    C. Reichhardt, D. Ray, and C.J. Olson Reichhardt
    New J. Phys. 17, 073034 (2015). arXiv


  45. Quantized transport for a skyrmion moving on a two-dimensional periodic substrate
    C. Reichhardt, D. Ray, and C.J. Olson Reichhardt
    Phys. Rev. B 91, 104426 (2015). arXiv


  46. Collective transport properties of driven skyrmions with random disorder
    C. Reichhardt, D. Ray, and C.J. Olson Reichhardt
    Phys. Rev. Lett. 114, 217202 (2015). arXiv


  47. Comparing the dynamics of skyrmions and superconducting vortices
    C.J. Olson Reichhardt, S.Z. Lin, D. Ray, and C. Reichhardt
    Physica C 503, 52 (2014). arXiv

Last modified Jan 7, 2019