Reversible to irreversible transitions in periodically driven skyrmion systems
We 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 reversib...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aaf8dd |
| _version_ | 1797750064903356416 |
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| author | B L Brown C Reichhardt C J O Reichhardt |
| author_facet | B L Brown C Reichhardt C J O Reichhardt |
| author_sort | B L Brown |
| collection | DOAJ |
| description | We 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. |
| first_indexed | 2024-03-12T16:28:19Z |
| format | Article |
| id | doaj.art-49921839db9c40bfbd2c5642975e21f6 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:28:19Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-49921839db9c40bfbd2c5642975e21f62023-08-08T15:37:07ZengIOP PublishingNew Journal of Physics1367-26302019-01-0121101300110.1088/1367-2630/aaf8ddReversible to irreversible transitions in periodically driven skyrmion systemsB L Brown0C Reichhardt1C J O Reichhardt2https://orcid.org/0000-0002-3487-5089Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States of America; Department of Physics, Virginia Tech, Blacksburg, Virginia 24061-0435, United States of America; Center for Soft Matter and Biological Physics, Virginia Tech , Blacksburg, Virginia 24061-0435, United States of AmericaTheoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States of AmericaTheoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States of AmericaWe 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.https://doi.org/10.1088/1367-2630/aaf8ddskyrmionnonequilibrium phase transitionsuperconducting vortex |
| spellingShingle | B L Brown C Reichhardt C J O Reichhardt Reversible to irreversible transitions in periodically driven skyrmion systems New Journal of Physics skyrmion nonequilibrium phase transition superconducting vortex |
| title | Reversible to irreversible transitions in periodically driven skyrmion systems |
| title_full | Reversible to irreversible transitions in periodically driven skyrmion systems |
| title_fullStr | Reversible to irreversible transitions in periodically driven skyrmion systems |
| title_full_unstemmed | Reversible to irreversible transitions in periodically driven skyrmion systems |
| title_short | Reversible to irreversible transitions in periodically driven skyrmion systems |
| title_sort | reversible to irreversible transitions in periodically driven skyrmion systems |
| topic | skyrmion nonequilibrium phase transition superconducting vortex |
| url | https://doi.org/10.1088/1367-2630/aaf8dd |
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