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dc.contributor.authorBrown, B.L.
dc.contributor.authorReichhardt, C.
dc.contributor.authorReichhardt, C.J.O.
dc.description.abstractWe examine skyrmions driven periodically over random quenched disorder and show that there is a transition from reversible motion to a state in which the skyrmion trajectories are chaotic or irreversible. We find that the characteristic time required for the system to organize into a steady reversible or irreversible state exhibits a power law divergence near a critical ac drive period, with the same exponent as that observed for reversible to irreversible transitions in periodically sheared colloidal systems, suggesting that the transition can be described as an absorbing phase transition in the directed percolation universality class. We compare our results to the behavior of an overdamped system and show that the Magnus term enhances the irreversible behavior by increasing the number of dynamically accessible orbits. We discuss the implications of this work for skyrmion applications involving the long time repeatable dynamics of dense skyrmion arrays. © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.en_US
dc.publisherInstitute of Physics Publishing
dc.rightsCreative Commons Attribution 3.0
dc.subjectnonequilibrium phase transition
dc.subjectsuperconducting vortex
dc.titleReversible to irreversible transitions in periodically driven skyrmion systemsen_US
dc.typeArticle - Refereed
dc.description.notesWe gratefully acknowledge the support of the US Department of Energy through the LANL/LDRD program for this work. This work was carried out under the auspices of the NNSA of the US DoE at LANL under Contract No. DE-AC52-06NA25396 and through the LANL/LDRD program.
dc.title.serialNew Journal of Physics

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